sound of seal is called. While this facet of sound reduction is rarely talked about, it can have huge ramifications in the success of your sound reduction efforts. sound of seal is called

 
 While this facet of sound reduction is rarely talked about, it can have huge ramifications in the success of your sound reduction effortssound of seal is called  19, and weekends in March

That may sound big for a baby, but a newborn harp seal, called a yellowcoat, is actually pretty skinny for its size. Seals and sea lions have just one pup a year. By surviving their respective matches, they proved themselves to be the strongest of Orochimaru's prisoners and as such were made his. Populations of these charismatic animals were severely depleted due to hunting and intentional killing well into the 1960s, when they were at fractions of their historic abundance. The best place to see seals is down at the Sound, between the Island and the Calf of Man, often hauled up on Kitterland. ”. Sound clip. Prince William Sound, on the south coast of Alaska. Sound Seal’s BSC-25 consists of a non-reinforced 1-lb psf loaded vinyl noise barrier sandwiched between two layers of 1” thick acoustical fiberglass sound absorbers, each quilted with a vinyl-coated fiberglass-cloth facing. angustirostris) and the southern elephant seal (M. and they are called “graycoats. In order to procure a mate and defend its territory,. " "He revealed the names and the unit that killed bin Laden," the. 2020) which shows gray seals recorded off the coast of England. In some regions, females appear to be slightly larger than males. Seals Barking and Water Splashing. The growing interest in seal research and watching led to the establishment of the Icelandic Seal Centre back in 2006, which is located just on the Vatnsnes peninsula in a quaint fishing town called Hvammstangi. Roughly a decade ago, a team of biologists glued audio recording devices onto the backs of a handful of elephant seals on the California coast. The French word for seal is “phoque. Seal livestream; What we do. Solomon's Seal, 2 pints water, 1 pint molasses. Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM. with the exception of a rare freshwater subspecies of harbour seal called P. Sound Seal Brands. Harbor Seals Don’t Chew Their Food. Male Northern elephant seals fighting on the beach at Año Nuevo State. " A typical pod contains between 10 and 100 seals. They produce distinctive, stereotyped calls that can be heard for up to 12 miles. A sense of rhythm and timing had never before been demonstrated in seals. The acoustic mixture should be at least 0. Hooded seals are sometimes found vocalizing in the form of a song with repetitive sequences varying slightly with time. 5 m long and are gray-brown in color; some individuals have irregular light-colored patches. “Le phoque” is the French phrase. If air can get in, sound can get in too so installing good seals, gaskets, and caulks around doors and windows is extremely important. Life Span of a Seal. Amber Harris woke up at 6. Coloration varies, but two basic patterns occur: light gray sides and belly with dark blotches or spots, or a dark background with light rings. For each elephant noise, the sound is produced by expelling air from the. 2021). Step 6: Seal the gaps and edges with sound sealant to prevent noise vibration penetrating the wall. All of Maine’s seals are members of the True Seal family (Phocidea in latin). Below are the two types of headphones that have the least amount of leakage: In-ear headphones – Thanks to their small driver size, in-ear headphones, like the Bose Sport Earbuds , are less likely to produce sound leakage at safe listening volumes. His sound flows like water, and I consider his work with Seal to be some of the greatest studio productions in history. Door Seals. Baby harp seals are considered the cutest type of seal. The sound is throaty and. #3. Given its importance as one of two Northwest Atlantic harp seal. I'm completely humbled every time I listen to those records. Females are somewhat larger than males in this species and can. Years passed until finally, in October 2017, Ben caught the behaviour on film while diving near the Farne Islands, UK. John O’Connor/Zenger. Simmer down to 1 pint, strain, evaporate to the consistence of a thick fluid extract, and mix with it from 1/2 to 1 OZ. Cat goes “meow”. Kids often make a high-pitched or squeaking noise while breathing in — this is called stridor. They married in 2006 in Mexico, and they renewed their vows every year. 1. The most common symptom for a problem with the differential output seal is an oil leak. The Guadalupe fur seal is listed as a threatened species, with a population estimated to be about 34,000 individuals. There are two types of seals: the earless (true) seals (family Phocidae); and the eared seals (family Otariidae), which comprise the sea lions and fur seals. 4 meters) but depths of up to 1,460 feet (446 meters) have been recorded. Female gray seals live up to 35 years and males about 25 years. One female Grey seal around the Shetland Isles in Scotland was known to be 46 years old. The harbor seal populations of Danish and Swedish waters have had turbulent population dynamics during the last century. When seals gather together to breed and raise their young, they form a “rookery. Australian Fur Seals prefer to haul ashore on rocky islands and ledges along Australia's southern coasts, but most other types of seal are found in even cooler waters towards the Arctic and Antarctic regions. The traditional sacred horn of the ancient Hebrews was the shofar, made from a ram's horn. Size: Range from 4–13 feet long. Upon the sound of the first trumpet, hail and fire mingled with. Seals have much quieter soft grunts when they make a. 983. . Seals and walruses have shorter flippers, while sea lions have longer. Coyotes can sound like dogs, but they have a more. No other marine mammals are known to make sounds in. Female seals are called ‘Cows’. The most common collective noun for a group of seals is a herd or pod. Little scientific information exists on harbor seals in Long Island Sound, a. Overall, ship noise was audible for 2. Seal. The Namibian Parliament created the seal harvest as a way to reduce the exploding seal population, but others worldwide see the detriment it causes to the species. Copy. Answer: A) BarkExplanation: Subject: General Science. Male bearded seals are found in the Arctic and have a complex vocal. They have good hearing above and below the water, but respond to sound better in air. 99 on Amazon ): These ear tips feature two side holes for optimal noise reduction, just like the original, and come in three sizes. Trumpet 3: Wormwood star falls from heaven making water bitter and killing many. What sound does a seal makes? seals make a barking sound. To humans, baby seals are merely adorable mammals and assets. While relatively sure that pinnipeds evolved from land. 19, and weekends in March. Listen to the amazing sound of a Harp seal. Southern elephant seals breed on land but spend their winters in the frigid Antarctic waters near the Antarctic pack ice. The average size of a male gray seal is approximately 7-8 feet in length and between 660-770 pounds in weight. Polar bears, artic foxes, and great white. Seals are the homebodies of Puget Sound. Cry is called bark Consent for the cookies in the area about potential danger frogs make a quot! A seal makes a sound that is a mixture of a bark and an eerie whaling sound, depending on the species of seal. Example Sentences in Context. B) Unobtanium. They can repeat syllables, words, individual letter sounds, and more. They are large ocean-going mammals with adult males weighing up to 3,000 kg and adult females between 300 and 900 kg just prior to giving birth. These conclude the five main differences between seals and sea lions. Silencer is a perfectly acceptable term for them. And he will have a scale. An imposing, muscular man with dreadlocks and a probing gaze who seems taller than his actual 6-foot-1, Seal delivers the words slowly and. In a sealed speaker setup, the driver diaphragm compresses air in the enclosure when it moves in and rarefies air when it moves out. Average-sized adult males measure about 2. Oh my god, that’s what it is! Ok now remember people used to CLUB THESE! With CLUBS! REPEATEDLY! I didn’t know what they sounded like. ‘Talking’ seals mimic sounds from human speech, and validate a Boston legend In the late 1970s, a harbor seal named Hoover began catcalling passersby at the. Seals simply do not have external ears that can be seen from the outside, but when you get close enough, you can see the tiny holes at the sides of their head. jacket – n. Here’s a table of common seal sounds along with their meanings or interpretations: Seal Sound. to seal silverware. The pups also kept a more steady pitch with the more intense noise levels. On returning to the house where. The video shows the seals clapping, as described in the paper, and includes audio so you can hear the sound of the underwater claps as well. Download free sound effects for your video clips, games, apps. It doesn’t have ear pinnas though an ear-opening can be seen behind the eyes. The whiskers are extra sensitive in order to allow the seal to feel its way in the low light of deep water. Averell Harriman,. 40 We'll be referring to these places in the vocal tract when describing the way various sounds are produced. The vocalizations are only heard during the breeding season which lasts for about 90 days, from about late March through mid July. Gray seals wouldn’t be the only ones who make sounds this way. The easiest way would be to take a bottle and fill it with dry pasta, beads, or anything that will make a noise a baby would find exciting. The “genuine” or “earless” seals have no external ears. These differences mostly come down to body shape and social organization. 20am to the sound of what. The Catastrophic Molt. The public should report all sightings of stranded animals to. Sounds like a person imitating a seal. This recovering Harp seal at Sealcentre Pieterburen is doing better, she gets her weekly checkup from our vet Alb. UC Santa Cruz. Each string has a different thickness. Marine mammals and sea turtles; Statistics Length: up to 2m Weight: 65-150kg Average Lifespan: 20-35 years. What is a group of elephant seals called? During the breeding season, elephant seals gather in large groups, called. an impression, device, or mark given the effect of a common-law seal by statute law or by American local custom recognized by judicial. Klum gave birth to Briatore's daughter, Helene 'Leni' Boshoven Klum in May 2004, with Seal. ∙ 9y ago. Seal: bark: Sheep: bleat, baa Sheep: Snake: hiss, rattle Rattlesnake: Songbird: chirrup, chirp, tweet, sing, warble (larks / warblers / wrens), twitter : Goldfinch: Squirrel: squeak Swan: cry, trumpet, bugle Trumpeter swan: Tapir: squeak: Tokay gecko: croak: Tokay gecko mating call: Turkey: gobble Wild Turkey: Whale: sing Humpback whale: Wild boar Roars are low frequency vocalizations that directly overlap with the low frequency noise associated with vessels. by Brian Duignan. Tags: Penguin Noise Penguin Sound Effect Penguin Sounds from Close up. Join. Harbor seals are rather small seals with a big head, short body, and short limbs. There are three basic modes of sound production in the human vocal tract that play a role in speech: the buzz of vibrating vocal cords, the hiss of air pushed past a constriction, and. Their jaws can open to 160 degrees and clamp down with incredible. A course of grace and havoc. Free mp3 Download. They also might breathe very fast or have retractions (when the skin between the ribs pulls in during breathing). In the most serious cases, a child may appear pale or have a bluish color around the mouth due to a lack of oxygen. However, there is still a great deal of research that has to be done in that field. Second, the outer ears of sea lions have little flaps. 8 Mart 20238 Mart 2023 0 0 . Key Points. A small difference in arrival times means that the object is in front of the seal; a larger difference means it is to the left or right. Year-round residents, they are the water body’s most common marine mammal, and harbor seal populations are healthy. Their life is divided into four stages. 7K. Most Distinctive Feature. Hunting prey is done differently according to the type of seal. The underwater explosion of a seal bomb with 2. Eclectic British pop artist Seal told Rolling Stone ’ s David Thigpen, “ All my songs are therapy. When deflated, it hangs down in front of the animal’s mouth. Male bearded seals are among the most vocal of marine animals. Hooded seals range from the Svalbard archipelago and the Barents Sea to the Gulf of St. The sound of the high-pressure metal sealed tank covered. Seals have shorter front and hind fur-covered flippers with long claws. Males weighing upwards of 4,000 pounds duke it out in. seal: [noun] something that confirms, ratifies, or makes secure : guarantee, assurance. Males establish dominance to determine who does the majority of the mating in a harem. After a week of build-up, The Beatles have released what's been billed as their. Oregon harbor seal pups are born in May and June and weigh about 30 pounds at birth. 5-6 feet in length and weighing up to 300 pounds, males are slightly larger than females. Yup, the viral TikTok is totally on the money—the French word for the adorable sea mammal is, in fact, “phoque. Differential oil leaks. Royalty-free sound effects. Exam Prep: Bank Exams. 1 feet and weigh 250–370 pounds. Harbor seals grew from a Salish Sea population of 8,600 in 1975 to 77,800 in 2015, and their diet includes a greater percentage of Chinook smolts than seals in other areas. what happened to bob williams nasa engineer. The Lombard effect is typical for human speech, as people. Meaning or. Unlike harbor seals and other true seals, California sea lions have external ear flaps and long, dog-like muzzles. Library. These marine mammals are incredibly loud and can be heard from as far away as 12 miles. A new study reveals that elephant seals memorize the rhythm and pitch of individual voices. The vision of the seals, which, although related first, exhibits events concurrent with those symbolized by the trumpets and vials, is contained chiefly in Revelation 6. Door gaskets are used to seal gaps at door perimeters (the jambs and the header). Thick waterproof underfur and layers of special body fat called blubber help all seals keep warm despite icy or freezing conditions. The most notable differences in seals and sea lions are the ear flaps and the flippers. Synonyms: block, block off, close, close off, obstruct, seal off. pronunciation – n. Download. Weight: 100 pounds to 4. The color of each seal’s fur varies but there are two basic patterns: light tan, silver, or blue-gray with dark speckling or spots, and a dark background with light rings. " It didn't quite happen like that; the track was actually used in a love scene between Nicole Kidman and Val Kilmer. ∙ 9y ago. Elephant seals are shielded from cold. [1] This is a masculine word in French, so you’d use masculine articles like “le” and “un” to say “the” and “a,” respectively. They are the largest extant carnivorans, weighing up to. This week marks the beginning of the annual Canadian harp seal hunt, by far the largest marine mammal hunt in the world and the only commercial hunt in which the target is the infant of the species. 4. Coloration varies, but two basic patterns occur: light gray sides and belly with dark blotches or spots, or a dark background with light rings. The Creature Cruises, as the tours are called, are set for Feb. Originally in the genus Phoca with a number of other species, it was reclassified into the monotypic genus Pagophilus in 1844. These include hit songs "Crazy" and "Killer", the latter of which went to number one in the UK, and his most celebrated song, "Kiss from a Rose",. The name was quickly adopted by the broader scientific community. These often beautiful objects were ubiquitous in the Ancient Near East and remain a unique record of individuals from this era. Other underwater sounds produced by gray seals in captivity have been described as humming, moaning, and. 1. 00:01. 4 metres (3. Royalty-free seal sound effects. Of an estimated 27. Harp seal, (Pagophilus, or Phoca, groenlandica), medium-sized, grayish earless seal possessing a black harp-shaped or saddle-shaped marking on its back. 650,000. Male elephant seals compete fiercely for access to females during the breeding season, and their violent, bloody fights take a toll on both winners and losers. They are covered with short, stiff, bristle-like hair. Another great way to tell is not in appearance but sound! A sea lion is very noisy. , 1970), the wail. Southern elephant seals are named after the large proboscis (nose) of the adult males, which is used to make loud roaring sounds, especially during the mating season. There is a series of seven seals, then a series of seven trumpets, then a series of seven bowls of wrath. Outforia Quicktake: Key Takeaways There are 33 living seal species in three families, including true seals, eared seals, and walruses. The White Horse represents peace. Adults, on average, weigh 90-140 kg (190-309 lb) for males and 65-80 kg (143-176 lb) for females, though pregnant females may weigh up to 140 kg (309 lb). Avosound. It is available in different sizes, colors, and materials, and it is important for home and business owners to choose the right one for their needs. Weight: Range between 85–4,000 pounds. For six to eight weeks each spring, the ice floes of the Gulf of St. The Elephant seals nose is used in producing extraordinarily loud roaring noises, especially during the mating season. Adult females usually mate and give birth every year. However, along the coastlines of Washington and Oregon, they are born as early as April (view map of pupping season). Albacore: a prized species of tuna. ATF calls them silencers, you have SilencerCo, Silencer Shop, Dead Air Silencers, Griffin Armament calls them silencers, and even Rugged Suppressors refers to them using both terms. . Local prey often influences a harbor seal’s seasonal and geographic feeding patterns. Also referred to as “eared seals,” sea lions do have visible external ear flaps. You can also note key differences between seals and sea lions by looking at their flippers. Door Seal Kits. Both U. Step 7: Apply green glue soundproofing compound to the back of the second layer of drywall after it’s been measured and cut. The. three times daily. Another difference is that the rear flippers of true seals point backward, and these seals move on land with an up-and-down undulating motion. SEAL PUP 101 Harbor seal pups grace our lives by visiting inland Puget Sound waters in early summer and fall. 20am to the sound of what she thought was “somebody breaking. Window Felts. This is called vocal learning. Shortcuts. A cylinder seal is a small pierced object, like a long round bead, carved in reverse ( intaglio) and hung on strings of fiber or leather. Pinnipeds divide their time between near shore terrestrial habitats and the ocean. Repair: The are professionals that repair double-pane windows by removing the glass and cleaning the inside of the moisture. Southern elephant seals are named after the large proboscis (nose) of the adult males, which is used to make loud roaring sounds, especially during the mating season. February 27, 2023 endeavor air pilot contract No Comments . 5 feet) long and typically weigh between 300 and 400 kg. This is where the babies are completely dependent on their mother. Lifespan: 30 years. In December 2018, Dr Andrea Ravignani published his discovery that seal pups adjust their communication based on the sounds of other pups. Coiffeteria Blog . It is the second-largest seal in the Antarctic ecosystem, behind elephant seals. The report did not provide information on Hoover’s pre-exposure. The harbor seal is probably the most widely known seal and is also referred to as the common seal. The thing is, harbour seal pregnancies last only 10 months, yet every seal gives birth at the same time of year. Are baby elephant seals called calves? The word calf can mean either a baby cow or bull, or the area of the back of your leg between your ankle and knee. What is the sound of a seal called? List of animal sounds Animal Description Sound Rook caw Seal bark Sheep bleat 0:09 Sheep Snake hiss, rattle 0:16 Rattlesnake What noise do fur seals make? To keep warm in their cold water habitat, they have a dense fur cover with almost 350,000 hairs per square inch. 1. what sound does a seal make in words; why is stacey mckenzie voice so deep; shera and the three treasures wiki; Home. Download. Appearance. When it comes. Harbor seals ( Phoca vitulina ), are “true seals” of the Phocidae family, also sometimes called “common” or “hair” seals. These files are much higher quality (and larger) elephant seal vocalizations. 8 m (approximately 5-6 ft). Sealed Speaker Enclosures. Monk seals have been hunted extensively for fur, oil, and meat, and all three species are listed as endangered in the Red Data Book. In fact, seal pups are known to have some of the loudest cries of any baby animal. The family of Phocidae contains all of the true seals; they are sometimes called crawling seals or earless seals to distinguish them from other types of seals. The sound that is made by a seal is called a bark. ), p. It is a piece of material that is attached to the bottom edge of the door, and it eliminates drafts, gaps, and moisture. Are sea lions friendly?Kimimaro (君麻呂) was the sole survivor of the Kaguya clan. "Bark" is also a verb that describes the sound of many canids. imAbalone: a large edible sea snail of coastal waters. Use it to seal around electrical and lighting boxes, wall, and panel perimeter joints to improve the partition STC rating. The first stage is called the “baby seal” phase. The dominance battle can progress to a bloody physical attack. Share. 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). The first phase is a distinctive low-frequency, guttural vocalization. Seals do not bark as sea lions do; they instead communicate by grunting and slapping the water with their fins. Seal is a common name given to a diverse group of aquatic, generally marine mammals of the order Pinnipedia. Sea lions are known to bark. When hauled out on rocks or ledges, they often assume an arched position with their head raised and their hind flippers. 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. It is adapted for swift and graceful swimming. Door gaskets are used to seal gaps at door perimeters (the jambs and the header). 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. Seal noises. A new study confirms seals’ uncanny ability to copy human speech. 19:16. Fourth, while both species spend time both in and out of the water, seals are better adapted to live in the water than on. Southern elephants are the largest of all seals. A sea lion can rotate flippers under its body. 2. We also invite you to listen to audio pronunciation in more than 40 languages, so you could learn how to pronounce seal and how to read it. . Weight: 99 – 7100 lb (45 – 3200 kg) The Baikal seal is the smallest at 3ft and 99lbs, while the male Southern Elephant seal is the largest, measuring 16ft and 7100lbs. If the seals dry or wear out, they will leak fluid from the axle shafts. Headphones with a design that creates a good seal have the best chance at combating sound leakage. Weddell seals use a. 0). 0: 2:09: Animal: Seal: Weddell Seal. Similarly, a rookery serves as a central hub where seals engage in courtship rituals, give birth to their pups, and nurture. Seals are members of the family Pinniped, which also includes Walruses and Sea Lions. columbia law school students what sound does a. Population: Unknown, but in the hundreds of millions. what sound does a seal make in words. Joe Busby/CC-BY-2. The sound is throaty and. The keyboard player is playing it out on a Roland Fantom G8 - however there are other live videos where the keyboard player is just hitting one set of keys each time and the keyboard itself is doing. Mothers and pups will use sounds to stay in contact with one another. View Product. 3. We read in. The rapid growth of harbor porpoises in the main body of Puget Sound was about 37 percent per year from 2000 to 2014, according to the analysis. • 12B – 15/32” bulb. Loved this time of year--Sept 1st-teal in the morning dove in the afternoon. Sea lions will “bark” like that of dogs while seals will emit a “snarl”. These seal pods often stay together for extended periods. Sea lions are often confused with seals. Boston’s Central Artery and Harbor Tunnel project is the largest highway. Being a rare possessor of his clan's. The Baikal seal (Phoca sibirica) of Lake Baikal in Siberia, Russia, is the smallest at 1. Harp seal milk is almost half fat—10 times fattier than cow milk!New year, old, debunked claims. View More Notifications View More Messages. While non-hearing physical damage was estimated for close ranges (<4 m; Myrick et al. These create a seal between the door panels and a movable glass window. Estimated Population Size. They can be found sleeping on. Seals range in size from the 1 m (3 ft 3 in) and 45 kg (99 lb) Baikal seal to the 5. On April 10th,. . While seals and sea lions can be very difficult to tell apart for the untrained eye, there are five important differences between them that should aid in identification. Boat hatch seals are available in two sizes to meet your application needs: • 11B – 3/8” bulb. Katrina Oconnell proposes that maybe the sound is a medical condition: "It's called Sleep Apnea, the elephant seal has to snort and sneeze to keep nostrals [sic] open…"16:11:26. 5 feet and between 330-450 pounds in weight. Mature males can reach a weight of 400 pounds, and their coats range from silver to olive gray with brown undersides. They produce distinctive, stereotyped calls that can be heard for up to 12 miles. True seals are also called earless seals, because of their smooth round heads, or crawling seals, because of the way they scoot themselves flat across the land. 2042. A bark is a sound most often produced by dogs. embed, fix, set. By Andrew Evans. It is located in the same region as the smaller but more famous and accessible Milford Sound / Piopiotahi. Pinniped, a diverse group of semi-aquatic marine mammals, many of which are commonly called seals, particularly: . When seal pups are separated from their. a device with a cut or raised emblem, symbol, or word used especially to certify a signature or authenticate a document. The scars on his face are a result of discoid lupus. The previous studies hypothesized that the human ear underwater works by so-called bone conduction; that is, that the sound waves vibrate the skull. 2 kHz. Males’ coloration is typically darker than females’. He has sold over 20 million records worldwide. Headphones with a design that creates a good seal have the best chance at combating sound leakage. 9. O n his 60th birthday earlier this year, Seal thought he had died. This. Efforts to understand sound production often focus on sounds generated via apparatuses that specifically evolved to phonate, such as the larynx. Nothing more fun than a good dove shoot with a bunch of buddies over sunflower field in St Charles County west of St Louis--then later in the season traveling down to Sikeston in the Missouri Bootheel--the dove were like mosquitos. Both the Grey and Common seal have been known to live more than 30 years. The White Horse represents peace. The Mediterranean monk seal Monachus monachus is one of the most endangered pinnipeds in the world, and is classified as “Endangered” by the International Union for the Conservation of Nature. Share. Hoover was raised by humans and. This is commonly associated with sea lions, which are a type of seal that. It is located on the east side of the Kenai Peninsula. Romance in the world of northern elephant seals is generally rough going. Last updated November 07, 2023. Do elephant seals…Yes, they do! Just because you cannot see something does not mean that it is not there. An “eared” seal which forms breeding colonies in New Zealand and its Subantarctic islands, the coasts and islands off southern Australia including Macquarie Island. Seals and sea lions are taking a major bite out of the threatened chinook salmon population in Puget Sound, and the competition for food could be having repercussions for endangered Southern. Orca beaching to capture sea lion along Valdes Peninsula Orcas swimming in close synchronization to create a wave to wash the seal off the floe. Front-wheel drive vehicles have two transmission seals because they have two output shafts, one for each axle. Their front teeth are sharp and pointed, and great for grasping and tearing. Male seals tend to be much larger than females, and such differences in size and other characteristics — called sexual dimorphism — in pinnipeds such as Steller’s sea lion and the northern fur seal dates back to about 27 million to 20 million years ago, the new study from Canada shows.