Sperm wale


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Marine Mammal Laboratory




Do retail whales have any modifications. Deadly academics, but few winners, have calluses on the latter diagram.


Sperm wwle can dive for over an hour. Sometimes getting a meal walr easy for sperm whales as evidenced by disk-shaped scars and wounds likely made by giant squid resisting capture. How do sperm whales have their young? Sperm whale herds appear to be organized on a "harem" system similar to elephants where a solitary bull male sperm whale joins a school of adult females plus their calves, and juveniles of Seprm sexes for the length of a breeding season. Males sometimes fight to gain control of harems by biting and butting of other males. Females will sometimes assist this process by driving away older males.

The sperm whale's lower jaw is very narrow and underslung. One hypothesis is that the teeth are used in aggression between males. Rudimentary teeth are also present in the upper jaw, but these rarely emerge into the mouth. Like the age-rings in a tree, the teeth build distinct layers of cementum and dentine as they grow. The brain is the largest known of any modern or extinct animal, weighing on average about 7. Elephants and dolphins also have larger brains than humans. The olfactory system is reduced, suggesting that the sperm whale has a poor sense of taste and smell. By contrast, the auditory system is enlarged. The pyramidal tract is poorly developed, reflecting the reduction of its limbs.

The flexible ribcage allows lung collapse, reducing nitrogen intake, and metabolism can decrease to conserve oxygen. Sperm whales spout breathe 3—5 times per minute at rest, increasing to 6—7 times per minute after a dive. The blow is a noisy, single stream that rises up to 2 metres 6.

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The first secretes no gastric juices and has very thick muscular walls to wake the food pSerm whales wal chew and resist the claw and sucker attacks of swallowed squid. The second chamber is larger and is where digestion takes place. Undigested squid beaks accumulate in the second chamber — as many as 18, have been found in some dissected specimens. Such beaks precipitate the formation of ambergris. The sperm whale has a relatively short, stubby flippers and a low hump instead of a dorsal fin, with 'knuckles' stretching from the hump along their backs to their triangular tail flukes, which are raised when diving.

Most females, but few males, have calluses on the dorsal hump. The sperm whale is one of the deepest diving mammals in the world.

Typically it makes dives of up to m, but can reach depths of up to km. It is thought to wal able to hold its breath for up to two hours, although 45 minutes is the average dive time. An average dive lasts about an hour. When hunting smaller fish, sperm whale pods can work together to force feeder fish into ball-like clumps that are more substantial to eat than individuals. Are sperm whales social?

This includes calling to each other and rubbing against each other. How fast can sperm whales swim? Functional teeth 18 to 25 pairs that fit into sockets in the upper jaw are present in the lower jaw only. The bushy blow projects up to 5 m and, because of the position of the blowhole, is directed forward and to the left. On windless days, such an angled blow is diagnostic.

Wale Sperm

Adult males and females can be distinguished not only by size differences, but also by the presence or absence of calluses on the dorsal hump. Can be confused with Sperm whales are generally easy to distinguish from other large whales at sea, even at a great distance. The uniquely angled blow is diagnostic, but one must be careful to take into account the effects of wind on a whale's blow.


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