Crowing. coxhall gardens photography permit; salinas obituaries 2022; connect dots without crossing lines game; rat respiratory infection home remedies; how to organize your thoughts for better communicationSeal sounds are so cute and funny that you'll want to watch them over and over again! In this short video, we take a look at some of the adorable seal sounds. 3. These words are shaped just as much by cultural differences as they are by linguistic ones. Your job is to match the animals we're going to show you to. Take a listen to a sea_lion. They make a number of vocalisations. Male seals are the most vocal because they use their calls to defend their territories. Bearded Seal Species Profile | Play bearded seal audioThey use hundreds of locations in Puget Sound to haul out or rest, including intertidal rocks, reefs, and beaches, logbooms, docks and floats. Oil puddles underneath your car. The range, pitch, and variety of these noises, however, are all vast and specified to each living environment. what sound does a seal make in words. Well, most seals bark. An alarmed adult sound consists of a “bubbling” that originates deep in the. Seals listened to vocalizations combined based on the rhythmic principles of tempo (fast or slow), length (short or long calls), and regularity (metronomic or random rhythm). what sound does a seal make in words. The sights and sounds of an elephant seal colony are part of the symphony of California's wild places. Seals are no strangers to clapping. 4 million juvenile. Harbor seals also produce a wide variety of in-air vocalizations, including short barks, tonal honks, grunts, growls, roars, moans, and pup contact calls. 4 meters) but depths of up to 1,460 feet (446 meters) have been recorded. When a colony is riled up, it can be a sheer cacophony of. Like other Arctic seals, their pups are born with long white fur called lanugo. The average length of adult ringed seals is 1. Scientists believe bull seals make the noise underwater to deter competitors during the mating season, with the loud high-frequency sound sending a strong message to other males in the. When the seal pups heard louder sea noises, they lowered their tone of voice. Post author: Post published: May 18, 2023 Post category: search for motorcycles at all times especially before Post comments: how much did jean valjean pay for cosette in today's money how much did jean valjean pay for cosette in today's moneyListen to the amazing sound of a Harp seal. Seals like to play with toy balls. Marine mammals produce vocalizations using mechanisms similar those of land mammals. "It was dramatic - we see the recognition after just a day or two," said Dr Casey. The sound that is made by a seal is called a bark. How does a dynamic transmission seal keep fluid inside when the shaft is constantly moving? Dynamic seals have a more complicated shape, with one or two lips depending on their design. The most widely distributed species of pinniped (walruses, eared seals, and true seals), they are found in coastal waters of the northern Atlantic and Pacific oceans. Some calls that the male seals make are used to attract a female; other sounds are made to threaten another male. ”. Human listeners can easily classify the sounds grey seals make into these. One common and earliest front axle seal leak symptom is oil puddles underneath the front of the vehicle. Since seals are solitary by nature, it makes sense that their vocalizations are minimal. The sound is then modified in the upper portion of the throat to make a roar, a bark, a call, or even speech. Instead, they move by undulating in a caterpillar-like motion. Adult males use their large, inflatable noses during the winter breeding season to resonate sound when vocally threatening each other. Indeed, Weddell seals and other related species can hear frequencies up to at least 60 kHz,. Some of the vocalizations that seals make are referred to as “growls” or “snorts”, which may sound threatening. It's the first time the extent of these high-frequency sounds have been identified. 148K views 2 years ago. branding packages; graphic design services; photography & videoWhy do seals make a gargling sound? Wiki User. By: Olin Wade (Remodel or Move Stuff) Yes, door seals do help with noise. This type of vocalization is more. But Massimo wanted to try it anyway and gave the perfect fake watches to a friend artisan and asked him to silver plate it. This is Fritz, one of our Wildlife Response patients. John O’Connor/Zenger. " Fournet and colleagues listened to thousands of recorded bearded sealWhen mating season arrives, male seals make deep, throaty sounds to seek females’ attention. The average size of a male gray seal is approximately 7-8 feet in length and between 660-770 pounds in weight. You can use it on new doors with cheap seals, or old. The echolocation clicks have a frequency of up to 160 kHz, while the pulsed sounds range from 500 Hz to 48 kHz. Acoustically advertising male harbour seals in southeast Alaska do not make biologically relevant acoustic adjustments in the presence of vessel noise. Pups make a bleating mother-pup recognition call and a high-pitched alarm call. The latter sounds appear to be used as they home in on their prey, maybe similar to the way dolphins do. does lily james have tattoos old town kingfisher canoe pag ibig foreclosed house and lot in cebu city » justin simle starts his own airline » what sound does a seal make in words5. Weddell seals produce trills, whistles, low frequency buzzes, and chirps. The door must be sealed on all four sides. Secondly, sea lions have small flaps for outer ears. Females lack the distinctive arched nose and are more delicately featured. The pups also kept a more steady pitch with the more intense noise levels. What do elephant seals and Shakira have in common? They can both keep the beat. A baby sea lion, called a pup, can pick out its mother from among hundreds gathered on rocky shores just by the sound she makes. By using their front flippers, sea lions are easily the fastest group of pinnipeds. Before a deep dive, harbor seals slow their heart rates from upwards of 80 (averaging between 80 and 120) beats per minute to as few as three or four. Photo: istockphoto. Oct 20, 2021 at 14:59. The echolocation clicks have a frequency of up to 160 kHz, while the pulsed sounds range from 500 Hz to 48 kHz. The Catastrophic Molt. A seal is considered “mastered” when you unlock 3000, but you get the most value if you open up only 1000. Adults are dark gray with a light gray or white belly, and dark blotches scattered all over the body. former kutv news anchors. Add an answer. Take, for example, the sounds we use to describe dogs in English: woof, bow wow, ruff, yap, growl. Feeding mostly on krill with the use of long baleen plates, these animals can consume as much as six tons of krill per day. Kerguelen Fur Seal Arctocephalus Gazella. Weddell seals. What is the sound a seals make? Seal sounds to learn. Inconceivably, the team killed seven of the seals for specimens. Three talented seals at the Scottish Oceans Institute can. Females will average approximately 6. the way in which the sound of word or name is made. The speakers played a male leopard seal song, recorded far. what sound does a seal make in words sermones escritos para reflexionar; 27 Mar 2023. Sexandcandyyeah. Ignore the popping sound, or you can even watch them and see lids going up and down. What sounds does a harp seal make? Despite what you may have heard, harp seals do not actually play the harp. For each elephant noise, the sound is produced by expelling air from the. Vocal Communication. #animalsounds #animalvoices #wildanimals #animals #wildworld #seaanimals #seal What Sound Do Seals Make? Their underwater vocalization is described as a roar with a peak frequency at approximately 1. Instead, the sea lion tail is used like a rudder. One high. But the new report from Washington’s Academy of Sciences says, in order to truly find out, "adaptive management" studies are needed. What noise do seals do? Their underwater vocalization is described as a roar with a peak frequency at approximately 1. Other underwater sounds produced by gray seals in captivity have been described as humming, moaning, and. Image credit: NOAA Fisheries. Best Answer. Grey seals can copy human speech and songs using the same sound production process as humans, new research has found. 35 EDT. We explained earlier that the common function of axle seal is to prevent oil leaks from the tranny and diff. , questions, discussion and forums because the E at the beginning of a line of dialogue sounds. 5 m (6. Sort of pop when you hear a leopard makes answer them will details hear the generic sound is!. What does seals sound like? seals usually make sounds like Oort Oort Oort. Arguably, one of the most satisfying feelings that define luxury over economy is the sound of a closing door. It has increased in air pressure, and then it decreased again, sucking the lid down into a vacuum. Nicks in the jar rim, food residue, overflowing jars, and more can stop the lids from sealing properly. Take a minute to refresh your soul with some ocean the. Here, we cover quality replacement seals for windshields, and all the other glass on your vehicle. Display Behavior. In Dutch we started calling these sounds “crying”, and the pups who make the sound “criers”, especially if the pups in question have seemingly lost their mother. Fun Facts. Background. The footage -- which took Dr Burville 17 years of diving to catch on film -- shows a male grey seal clapping its paw-like flippers to produce a gunshot-like 'crack!' sound. All kinds of seals communicate vocally by making noise with their throat and air. Marine Mammal Rescue gained over 6a gay noise. Let’s dive deeper into these six possible failing valve seal symptoms. Download. actually it's sealions that bark (ort ort) seals make a strange earie wale/moaning sound. True seals, unlike walruses, lack external ear organs, which can make them colloquially known as earless. Display Behavior. Regular huffing and puffing. Surprising seal sounds. Ringed seals produce simple barks, yelps, and clicks in the frequency range of 0. Additionally, it’s possible that it started out as “Urakh,” which was a Mongolian word which means “forward. Hocking says, since it’s an example of what’s called an “honest signal. Bats can learn to mimic specific sounds, which puts them into an elite group of animals capable of this. “I was diving off the Farne Islands when I first saw a large male clap underwater. Report injured/orphaned seal pups Harbor Seal pups spend much of their time out of the water on beaches warming up or resting while their moms are away feeding, sometimes for up to. Year-round residents, they are the water body's most common marine mammal, and harbor seal populations are healthy. Their noisy behavior serves a variety of purposes, including defending territories, attracting mates, and coordinating group hunting efforts. [deleted] • 9. In December 2018, Dr Andrea Ravignani published his discovery that seal pups adjust their communication. Share. The bearded seals, however, can only do so much. How fast does sound travel. . 2017-2020 F-150 Raptor 3. Seals cannot do this and must wriggle, hunch, roll, or slide to get around out of the water. Grey seals are highly social animals, living in colonies of up to thousands of individuals. A baby sea lion, called a pup, can pick out its mother from among hundreds gathered on rocky shores just by the sound she makes. Arctic seals make long-range calls underwater designed to attract females. A Marine rescue organization in Canada has gone viral online after sharing an adorable video of the sounds seal pups make. Full-term pups are born well-developed and able to swim at. What is the sound a seals make? Seal sounds to learn. The inflatable nasal cavity of the male hooded seal nearly doubles the size of its head. They’ll be louder in the mornings when they wake up and sleepier in the evenings. . He is doin. Gray seals wouldn’t be the only ones who make sounds this way. Noisy Turning. They make a number of vocalisations to communicate with each other, and it has now been shown that they will also clap their hand-like forelimbs together to make an cracking sound. Humans hear in the sonic range of 20 to 20,000 hertz (or 20 kilohertz), the researchers noted. Seal, I am a Seal, What do I say? Bark, bark, I say it all day. ” Essentially, a wimpy seal can’t make a loud clap like a strong seal can. Seal sounds. Harbor seals also produce a wide variety of in-air vocalizations, including short barks, tonal honks, grunts, growls, roars, moans, and pup contact calls. The sound made by harpseals (cubs) is more of a vocial vibration or squeek, the sound coming from adult harpseals is more of a grunt sound as if to say "leave me the hell alone. more. The average length of adult ringed seals is 1. Seals, however, lack the necessary anatomical structures. When the seal pups heard louder sea noises, they lowered their tone of voice. A seal makes a sound that is a mixture of a bark and an eerie whaling sound, depending on the species of seal. It depends on what your Baseball bat is made of. Above-ground snorts, whistles, and growls are responses to threats from other seals. They can remain submerged for up to 30 minutes at a time. Part of the series: Harps. Yes a sort of barking sound. REICHMUTH: Well female elephant seals make very different sounds. In Dutch we started calling these sounds “crying”, and the pups who make the sound “criers”, especially if the pups in question have seemingly lost their mother. A video from the paper (Hocking et al. Sealed: The lid dips towards the center; giving. Take a listen to a sea_lion. Ringed seals produce simple barks, yelps, and clicks in the frequency range of 0. The bearded seals, however, can only do so much. A kit includes automatic door bottoms and neoprene door jamb and a threshold to engage the door bottom. The sounds made by seal pups during their nursing period are very distinctive. Q: What noise does a seal make? Write your answer. They have massive shoulders and necks with large folds of skin. In contrast, males have sharper markings and a darker. These newly discovered call types — nine in total, with base frequencies above 20 kHz and ranging up to nearly 50 kHz — are the first report of such high-frequency vocalizations in any wild seals, sea lions and walruses, the group of sea mammals collectively known as pinnipeds. The harp seal's absence of pinnae is not without a purpose. In captivity, seals have been recorded underwater making rapid, pulsed sounds (or “ clicks ”) emitted at rates of 70-80 pulses/sec (similar to the buzz produced by some odontocetes ). Do seal make sounds? Seals make many sounds both out of the water—like elephant seals, and under water—like harbor seals. Hooded seals are named for the bi-lobed hood, an enlargement of the nasal cavity on the heads of males. Humans hear in the sonic range of 20 to 20,000 hertz (or 20 kilohertz), the researchers noted. . Seals are capable of making a wide range of sounds, from moaning and whistling to barking and roaring. How do harp seals interact with people? The seals might have lowered their pitch since lower-frequency sounds travel farther in windy environments like the one projected by the recorded audio, said Caroline Casey, a research scientist. I think seals make sounds like any other human would, just through a snorkel. Adults are 2-2. 2 kHz. Door seals are used to minimize noise from travelling through gaps in the door frame and the door itself. That was only a quick snapshot of the answer. 7 Hrs. And the researchers got really excited, as evidenced by the video and these articles (worth reading, and very accessible to laypersons, speaking as someone who sadly did not pursue a childhood fantasy of oceonography):. Most communication. These are happy lion sounds, used between individuals within a pride. When it’s time to find a mate, male bearded seals make a ruckus. • 7 min read. That means they can deliberately move between lower or higher pitch sounds and make themselves sound bigger. These vocal animals communicate with each other to regulate social behavior. This audio story is the final installment of the five-part series “ Peering into the deep . They can remain submerged for up to 30 minutes at a time. Between the bulls roaring, the mothers barking, and the pups bleating, the rookery is a noisy place indeed!. His video shows a male grey seal clapping its front flippers together to make a very loud crack sound in the water. How do harp seals interact with people?The seals might have lowered their pitch since lower-frequency sounds travel farther in windy environments like the one projected by the recorded audio, said Caroline Casey, a research scientist. ago. seal. Door sweeps and seals reduce air and sound by lining the perimeter of doors with aluminum and silicone. The upper and lower jaws have around 40 to 50 teeth, which are sharp and pointed. Seals, walruses, whales, otters, and others rely on the back end of their bodies—their tail—to produce thrust. Door Seals. Seals are among the few mammals capable of vocal learning. Harbor seals can however make sounds in-air too, including barks, honks, growls, grunts and even mother to pup contact calls. what happened to jayd johnson 2019; wakefield nh police scanner; how to screenshot on hp elitebook bang olufsen is deirdre bolton related to john bolton what sound does a seal make in words. February 3, 2021 by Joshua Rapp Learn. Cause: Transmission. A thin coiled spring, known as a. . Y. Their whoops, screams, barks, moans, and wails are used in simple communication, such as mating calls and territorial defense. Pinnipeds (/ˈpɪnᵻˌpɛdz/) (from Latin pinna "fin" and pes, pedis "foot" [2]), commonly known as seals, [a] are a widely distributed and diverse clade of carnivorous, fin-footed, semiaquatic marine. . Other possible derivations of the word include: “Hurrah”. What that means is that seals spend most of their time in the water (compared. The Weddell Seal has 34 different kinds of calls and can be heard for more than 15 miles underwater. So, as you would expect, their calls are a little more high-pitched. They're known for making the loud noise at places like zoos and aquariums, but unlike seals who are trained to slap their flippers together, it looks like grey. That was only a quick snapshot of the answer. Teach your baby or small child what a seal sounds like!The voiceover also teaches kids and babies know how to pronounce the word seal, in native (American) E. - During mating season, male bearded seals make loud calls to attract a mate. Hawaiian monk seals are also known to make a more growling “wup” sound – sometimes brief, sometimes drawn out (like that of the second vocalization made by the adult male. Library. When maintaining breeding territories male sea lions communicate by using a number of postural displays. The seal pups created a variety of noises, including gasp-like sounds and gurgling noises, as they subtly moved around the camera frame—all while melting. A northern elephant seal mother moves towards a speaker playing the sound of her pup's call. Harbor seals can dive to depths of 500 feet (152. image: Bearded seal on ice view more . Seals have small flippers, wriggle on their bellies on land, and lack visible ear flaps. The sound made by harpseals (cubs) is more of a vocial vibration or squeek, the sound coming from adult harpseals is more of a grunt sound as if to say "leave me the hell alone. An alarmed adult sound consists of a “bubbling” that originates deep in the. The most expensive problem that bad valve seals can cause is the destruction of your catalytic converter. Copy. Harbor seals also produce a wide variety of in-air vocalizations, including short barks, tonal honks, grunts, growls, roars, moans, and pup contact calls. In December 2018, Dr Andrea Ravignani published his discovery that seal pups adjust their communication based on the sounds of other pups. They also have molars for grinding up food. Furthermore, you may experience a rough idle, notice decreased engine performance or end up with a clogged catalytic converter. The first phase is a distinctive low-frequency, guttural vocalization. Seals, which rely on low frequencies for communication, are, for that reason, probably at higher risk than porpoises. com Wikipedia Discovery of Sound in the Sea Literature Share This Story, Choose Your Platform! | Harbor seals are commonly seen resting on rocks and beaches along the coast and on floating ice in glacial fjords. True seals make soft grunting sounds, sometimes emphasized by slapping the water, but otherwise, they’re pretty quiet. “It sounds like kshhhhh, kind of like static,” Bogaard said. It seems obvious that seals would also use sound to gain information about their surroundings. All in all, their lack of external ears does not make a big difference compared to other mammals when it comes to hearing above water. Now imagine trying to do it underwater – you would be unlikely to achieve quite the same impact. 6. This is Fritz, one of our Wildlife Response patients. 156. Door seals kits can be a very effective means of stopping sound from getting through a door. ”. But what does all that mean? Are they communicating with other species? Are they telling secrets about crabs? We asked marine biologist and animal behavioral scientist. In this article, we will explore the types of teeth seals have and how they use them in their daily lives. You are wondering about the question what does a seal sound like but currently there is no answer, so let kienthuctudonghoa. Blue Smoke From Exhaust. These seals have a long, muscular body and a large head and mouth. Method 3: Look for a Concave Lid. why do guys rub their stomachs; angelina jolie horoscope; Programs. Animal. Soft subtle purring. ) In the wild, the baby seals would be calling on a crowded beach, probably. 2-1. The sounds are amplified underwater and can be heard by other seals over large distances. seal. So why do they make these sounds? With true echolocation ruled out, Cziko and his colleagues suspect Weddell seals use ultrasonic calls. Some of the vocalizations that seals make are referred to as “growls” or “snorts”, which may sound threatening. A study conducted by the Cornell Lab of Ornithology’s Center for Conservation Bioacoustics (CCB) found that when ambient underwater noise gets too loud, the bearded seals are no longer able to compensate in order to be heard. Marine mammals produce sounds that are used for communication, feeding and navigation. One of the most noticeable signs of worn or cracked valve stem seals will be just after a cold engine start. A new study confirms seals’ uncanny ability to copy human speech. The majority of the leopard seal population occurs near and within the Antarctic pack ice. Paper in Marine Mammal Science It seems that only the males, which can be 200 to. The graph shows that younger sea turtles of any species hear higher frequencies better than older. Their long, slender bodies can reach lengths of 30. The Alaska Fisheries Science Center conducts ice-associated seal research surveys in the central Bering Sea aboard research vessels like the NOAA ship Oscar Dyson. The sound that is made by a seal is called a bark. Most of the newfound seal sounds exceeded 21 kHz, with some consistently rising to 30 kHz. A cracked or chipped seal ring The seal ring can crack or chip due to incorrect installation or incorrect handling of seal parts. Moans are tonal noises, which sound kind of like a dog howling. Grey seals use their short paw-like forelimbs to make loud clapping sounds underwater. Diet: Carnivore. 3 m (approximately 4 ft). The diversity of words we use for animal noises reflects the unique flavor of different languages. The Top 5 Reasons To Replace Your Window Seals. Seal gaps along windows with acoustic caulk. This does not mean they are injured. Molt is from the Latin mutare meaning 'to. Males of this species are significantly larger than females and weigh 200-275 kg (450-600 lb). The potential damaging sound for a human is 80+ decibels. , ships, sonar, and drilling) have increaseSee media help. seal. Adults are dark gray with a light gray or white belly, and dark blotches scattered all over the body. what sound does a seal make in words. During the sealing process, a vacuum is created, which draws the lid down, and forms a shallow, concave depression from the outer edge to the center. Years passed until finally, in October 2017, Ben caught the behaviour on film while diving near the Farne Islands, UK. If you encounter a possum making such sounds, keep your distance. Like other seals, harp seals employ a wide range of vocal sounds that they use to communicate with one another. In certain pinch points such as dams and locks, it appears obvious. They comprise the extant families Odobenidae (whose only living member is the walrus ), Otariidae (the eared seals: sea lions and fur seals ), and. a piece of clothing that is worn on your upper. Does a seal makes high pitch or low pitch sound?PUPPING In South Puget Sound, harbor seal pups are born late June through September (map for pupping timeframes in Washington State) and weigh about 18-30 pounds. Seal Sounds. Notifications Settings. You can hear the sounds of two male elephant seals, as they size each other up before battling for dominance. Nature Sounds Playlist: Soun. Please visit Home Video Licen. Basically, you just make so. Yes, door seals can help with sound. Females lack the distinctive arched nose and are more delicately featured. Post author: Post published: October 27, 2022;New Research Finds Baby Seals Can Change Their Tone of Voice, a Rare Trait Displayed in Humans. One of the most distinctive sounds that seals make is barking. The latter sounds appear to be used as they home in on their prey, maybe similar to the way dolphins do. [2]You can hear what sounds a seals makes #seals #sounds #animals #nature #soundsofnature #recommend #recommendNow, we don't expect you to know how long it takes for these animals to have their eggs hatched or how long their gestation periods are, but we do expect you to know the sounds they make. The harbor (or harbour) seal ( Phoca vitulina ), also known as the common seal, is a true seal found along temperate and Arctic marine coastlines of the Northern Hemisphere. Arctic seals groan, chug, or growl; Weddell seals. From Ketten and Bartol (2005). Weddell seal. Why do seals make barking noises? When they are older, male seals will also produce sounds to attract the attention of females. is flooded with the vocalizations of male bearded seals - a sound that can be best. Threshold shifts induced by human sound sources affect mainly the hearing at lower frequencies. Pups' sheep-like cries are individually distinctive to their mothers. They can produce a range of complex sounds, including trills, clicks, and even songs. The main thing to look for is the shape of the head – common seals have a more rounded head, whereas the head of the grey seal is more oval, with the characteristic sloping ‘Roman nose’ profile. The results of the study, “Limited Vocal Compensation. They also have excellent hearing and can communicate. Noise in a specific gear or gears is a clear indication that you have an internal transmission. Probably the most common consequence of underwater noise on. . This recovering Harp seal at Sealcentre Pieterburen is doing better, she gets her weekly checkup from our vet Alb. Young bird sounds like small seal. they bark like dogs but they have a higher pitch. "Bark" is also a verb that describes the sound of many canids. But, females and young have higher pitch vocalization than male reindeer. S. The absence actually contributes to the seals' abilities to pick up on direction in hearing, which they utilize to their advantage both underwater and above the surface. They can produce a range of complex sounds, including trills, clicks, and even songs. seal. Lifespan: 30 years. They later develop an adult-like bark. 2 ft) in length and 200 kg (441 lb) in weight. Their elaborate calls can last as long as. forgot to add eggs to bread dough. Year-round residents, they are the water body’s most common marine mammal, and harbor seal populations are healthy. 5 kHz, with a peak sensitivity of 12 kHz. Tesla has installed a sturdier, thicker, and firmer door seal with the. For anyone with a passion for pinnipeds like me, know that you can truly make a difference for seals and sea lions in the wild. 2 kHz. Scientists suggest seal pups can fine-tune their adorable "arfs" too, a rare feature for mammals besides us. By Madeline Buiano November 03, 2021. phillips andover college matriculation 2021how does this poem differ from traditional sonnets interflora; airmessage vs blue bubbles; southside legend strain effects; abd insurance and financial services; valenzuela city ordinance violation fines; my summer car cheatbox; vfs global japan visa nepal contact number; beaver owl fox dolphin personality test; CommunityThe booming calls, whistles, chirps, buzzes and trills of this seal sound more like Star Wars sound effects than an animal call! Let’s listen to one for yourself! Seal sound #1. This passes over the larynx, causing it to vibrate at different frequencies depending on the sound the elephant is making. . 2 kHz. No other marine mammals are known to make sounds in this way. All kinds of seals communicate vocally by making noise with their throat and air. The seals turned their heads more at sounds with regular rhythms than at irregular sounds, and also showed that they could tell the difference between long and short sounds or slow and fast sounds. 2 kHz. Seals are being temporarily deafened by underwater noise in the UK’s busy shipping lanes, a new study suggests. Slapping their bellies is a means of communication for seals.