Saturday, July 9, 2011

Life of Leatherback Sea Turtle

Life of Sea | Leatherback Sea Turtle (Dermochelys coriacea) |   Leatherback sea turtle can be found in the first place in the open ocean. Although  Leatherback sea turtle are most commonly found in tropical waters, they are distributed worldwide in temperate oceans, and even at the edges of the subarctic water. The  Leatherback sea turtle travels farther north than any other turtle. They live in North Atlantic waters as far north as Newfoundland, Nova Scotia, and Labrador. They inhabit South Atlantic waters as far south as Argentina and South Africa. This turtle inhabits waters far east as Britain and Norway.

Scientific classification
Kingdom:     Animalia
Phylum:     Chordata
Class:     Sauropsida
Order:     Testudines
Suborder:     Cryptodira
Superfamily:     Chelonioidea
Family:     Dermochelyidae, Fitzinger, 1843
Genus:     Dermochelys, Blainville, 1816
Species:     D. coriacea


Leatherback sea turtle is the largest living turtle in the world. The  Leatherback sea turtle carapace is slightly flexible and has a rubbery texture. No sharp angle is formed between the shield and the lower belly (plastron) is a Leatherback sea turtle is slightly barrel. Many can grow to more than one too. The front flippers of a Leatherback sea turtleare longer than in other sea turtles, even when the leatherback turtle the size of account.  Leatherback sea turtle mostly black boy look like you look down upon them, and their fins are edged in white. Rows of white scales give hatchling l Leatherback sea turtle the white striping that runs the length of their backs.

The  Leatherback sea turtle can dive to great depths. Turtles are equipped with depth recorders dove to more than 1000 m deep. This depth is greater than that reported for an air-breathing vertebrates with the possible exception of sperm whales and elephant seals. The shallowest dive took place at dusk and at dawn the deepest. These  Leatherback sea turtles feed on jellyfish were probably less than 600 m in external focus during the day and go to the surface at dusk. The turtle-dove almost continuously with only short intervals to the surface to breathe.  

Leatherback sea turtle have delicate, scissor-like jaws. Their jaws would be damaged by something other than a diet of soft-bodied animals, so they feed almost exclusively on jellyfish. It is remarkable that this large, active animal can survive on a diet of jellyfish, which are usually composed of water and seem a poor source of nutrients.

Leatherback sea turtle have existed in some form since the first real turtles more than 110 million years ago evolved during the Cretaceous period. The dermochelyids are close relatives of the family Cheloniidae, the other six sea turtle species. However, their sister taxon of the extinct family Protostegidae that other species do not have a hard shell included. Adult Leatherback sea turtle have few natural enemies once they mature, they are most vulnerable to predators in their first life. Birds, small mammals and other opportunists dig nests and consume eggs of turtles. Coastal birds and crustaceans prey on the hatching scrambling for the sea. Once they go into the water, they become prey to predatory fish and cephalopods. Very few survive to adulthood.

Leatherback sea turtle is in danger. Egg collection for food and drugs damage their breeding numbers, and the Leatherback sea turtle themselves also victims of boats and ocean pollution. In some countries, female turtles nest to kill people and harvest  Leatherback sea turtle eggs to eat. Because the turtles leave a trail to their nests when they make their way back into the water, the nest egg poachers are easy to find. Not only killer whales and sharks are the reasons when you see a turtle that has lost a flipper or injured.  

Entanglement in fishing gear can cause serious injuries to the turtles, including cuts and severe necrosis or in the worst case death. Entanglement can also cause death by drowning. Leatherback sea turtle sometimes has the size and power to swim to the surface of the water when caught in fishing lines, fishing gear, where they are discovered and released. Unfortunately this is not always the case. 

find here another sea creatures
Sea Creatures

1 komentar

Aleksei Molodtcov February 19, 2016 at 9:15 AM

Do JellyFish eat and how jellyfish do it?

Post a Comment