viernes, 19 de noviembre de 2010
The whale is the largest animal that exists today, there is no discussion about it. The fin whale can measure 25 to 30 feet long and weigh 150 to 200 tons. His heart is the size and weight of a small car utility and its body is covered with a thick layer of fat that keeps your body temperature between 36 and 37 degrees, even in very frías.Al waters contrary to what may seem The fat of whales is coated with a thin layer of skin along with the epidermisy also have another layer of fat of 15 cm or more below the skin serves as insulation and nutritional and energy reserves for the time of mating and breeding, which takes place in warm seas where food is in short supply .. The first mentioned secretes a substance which favors wetting hydrodynamics. Her body is slim. The two front limbs are transformed into fins. The hind limbs disappeared. They have also lost their fur, which is reduced to a few bristles, located in the cara.Su body has a large horizontal wing, equipped with a powerful musculature, allowing you to reach, in some species, speeds of 40 to 50 km / h. Except in the fin, which has some flexibility, the cervical vertebrae are welded to the skull. Some whales have a small dorsal fin, which is sometimes reduced to a small ridge and in the sperm whale, or disappears as the gray whale franca.Estos or large mammals, like all breathe air that is why so are possessed of great lungs, breathing through the nostrils that are on top of the head, which close tightly when submerged, opening them when they return to the surface to breathe, producing the characteristic puff of whales.
the lives of whales
For years they have been persecuted by seas and oceans, leading to decimate their population. Never have cared if these animals could provide expertise or information. Have always believed that we were above them, but when they decide to study them realize that they may even be smarter than they thought and then come to the sad conclusion that always ask the same question: is it too later? Until you have been able to adentrarce at sea, they did not realize that the world of whales is amazing and wonderful, and once in this habitat, they were astonished to realize that they have only begun to see the secret whales
viernes, 29 de octubre de 2010
whales and their feeding
The whales feed in different ways, depending on the species. Some have teeth as white whales, which feed on large prey such as the giant squid, which caught the traveling several kilometers under water, after detecting their sonar in utter darkness.
Although Valdés Peninsula area is the area of supply of this kind, you can register any such activity at the end of the season (October / November), before starting the migration of animals to the real areas of food, where they are abundant pockets of krill. In the area of Peninsula Valdes, is common with large concentrations of cross-tenóforos high protein content, and squid. The whale swallows tons of sea water, which is then removed from the mouth, filtering with those beards. Large amounts of food are trapped, being collected by his enormous tongue.
The female whales are always larger than males (12/14 m) and usually live in pairs or small groups, and breed in warm temperate seas. Females are suitable for breeding when they reach the 13/16 meter (3 / 4 years). The baby whales are able to swim at birth. The whale calves, puppies, born with a length of 5.5 m and 3.5 cm aproximdamente growing daily for the first two months, reaching a maximum weight for the species of 30/40 tons. They come to take up to 200 liters of milk a day, that milk contains a high percentage of fat. Unlike other mammals, including humans, breastfeeding is not unconscious, quite the contrary, the animal on its mother's mouth and this "eject" a dash of milk fat may reach about 50 kg. diarios.El gestation period for most species varies from one year to 16 months and all are characterized by a long period of careful breeding and feeding, about a year. Finally one of the most remarkable features of some cetaceans is their extraordinary ability to echolocation which is the location of an object by emitting and receiving sound. Some whales are solitary, others live in groups (schools). Large groups are each made up of small groups or units, each with a different function. The variety of habitats in which they live and their system of organization are witnessing the complete invasion and adaptation of the marine mammals. (Mother). The playability of cetaceans is relatively low compared with other mammals.
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