1. Beluga whale
Many populations migrate north in autumn. Those that summer in the Hudson Bay estuaries migrate north into the open bay in winter.
The Beluga has several unique characteristics in its body make-up. It does not have a dorsal fin. This allows the Beluga to swim under ice caps. It also can turn its neck. The seven neck vertebrae are not fused. This allows them greater mobility and flexibility.
The Beluga whale relies in sound production and reception to navigate, communicate, and locate breathing holes and to hunt in the dark. The beluga whale is nicknamed "sea canaries." They are very vocal. Scientist has documented 11 different vocals. These vocals include high-pitched, resonant whistles, squeals, cluck, mews, and bell-like tones. These tones can be heard above water and through a ship's hull. Beluga whales are thought to communicate through facial expressions and physical contact.
Toothed whales are able to locate and differentiate objects by echolocation. They do this by producing clicking sounds and receiving and interpreting the echo. A Beluga accomplishes this in the following steps: .
1. Produce directional clicks in rapid sequences call trains.
2. These clicks pass through the melon. It acts as an acoustical lens to focus these sounds waves into a beam, which then projected forward into the water in front of the whale, .
3. Sound waves travel a mile/a second, which is faster then traveling through air. .
4. These waves bounce off objects and return to the whale.
Beluga whales have a well-developed, acute sense of hearing. The auditory cortex of the brain is highly developed. They can hear sounds in the range of 1.2 to 120 kHz, with a peak sensitivity of about 10 to 75 kHz.
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Beluga whales feed on bottom dwelling animals such as Octopus, squid, crabs, shrimp, clams, and fish such as herring, smelt and, flounder. Belugas also herd fish when there is a group of them. They swallow their food whole. In a zoo habitat, they eat about 2.
The scientific order of all types of whales is Cetacea. This large order is broken down into three further groups as well: the toothed whales or Odontoceti, which includes killer whales, dolphins, porpoises, beluga whales, and sperm whales, the baleen whales or Mysticeti, which include blue whales, humpback whales, gray whales, and right whales, and the Archaeoceti order, which are all now extinct. ... The killer whale has a sleek, streamlined body. ... Killer whales live in groups called pods. ... Killer whales often hunt in pods for their food. ...
The question whether or not to whale is an issue with many factors. ... Japan claims that small-scale exploitation of whales pose no threat to whale populations yet is critical to the survival of their society. ... Reports show that increased hunting by the native coastal communities of Greenland has dramatically reduced the stocks of beluga whales since 1981. ... The North Atlantic right whale, the most endangered species of large whale in the world, has barely recovered since the end of commercial whaling and the number of the right whale is a mere 300. is It is predicted this species will ...
The question whether or not to whale is an issue with many factors. ... Japan claims that small-scale exploitation of whales pose no threat to whale populations yet is critical to the survival of their society. ... Reports show that increased hunting by the native coastal communities of Greenland has dramatically reduced the stocks of beluga whales since 1981. ... The North Atlantic right whale, the most endangered species of large whale in the world, has barely recovered since the end of commercial whaling and the number of the right whale is a mere 300. is It is predicted this species will ...
Its scientific name is carcharodos carcharias, and that scientific name is also used for many other sharks like the hammer head shark and the whale shark. ... The great white feeds on many different animals that go from small fish to big animals like belugas and sea lions. ...
Over the course of its 23-year existence, Barnum filled the American Museum with lots of strange and rare things like dioramas, scientific instruments, a flea circus, a loom run by a dog, the trunk of a tree under which Jesus' disciples sat, an oyster bar, a rifle range, waxworks, taxidermists, phrenologists, pretty-baby contests, a variety of freaks like the Siamese twins, a menagerie of exotic animals that included beluga whales in an aquarium and giants,...