2)The leather back sea turtle, sometimes called the lute turtle, is the largest of all living turtles and is the fourth-heaviest modern reptile behind three crocodilians.

2)no...

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which beach they are born.

B. i have learnt that the leatherback turtle is the largest sea turtle.

B] I learned that they have the scariest mouth in the world! XD

i learnt that the leather back turtles weigh 1700 pounds and they are the largest turtles.

Answer: They live for 30 years to a hundred years old.

B)I learnt that Leather 

back sea turtles are the biggest turtles on Earth.

(B) I learnt that the leatherback sea turtle can get stuck in abandoned fishing nets.

they were born?

I learnt that baby leatherback turtles can hatch in a large group.

Becoming Extinct.

A:Due to Over harvesting,Illegal Trade and Habitat Loss.

How they remember the beach that they were born on

some can live up to 50 years

a: http://youtu.be/kn0ZDR5qPRo

There are about 60-100 of them

the leather back turtle can reach up to 180cm, and 500kg in weight.

B.From the video,I realise that after nesting,they will leave the beach and return to the same beach!

grow so much bigger than others ?

If it is an adaption , I want to know

what it's adapting to .

Answer: We throw plastic bags into the ocean and the turtles think it is its food,jellyfish and eat it,so it will suffocate to death.

Thats how the turtles know where they were born! :D

A: How does the leatherback turtle know which beach it was born on?

B: They use a relatively simple navigation system

B) I have learnt that leather back turtles are one of the largest turtles in the world

he leatherback turtle is the largest marine turtle and one of the largest living reptiles. Leatherbacks are one of the most migratory of all marine turtle species, making both trans-Atlantic and trans-Pacific crossings. They are easily distinguished by their carapace, which is leathery, not hard as in other turtles, and by their long front flippers.

Leatherbacks have a unique system of blood supply to their bones and cartilage. This enables their body temperature to stay several degrees above the water temperature and allows them to tolerate cold water, rather like a mammal. They can dive to depths of up to 1,200m, much deeper than any other marine turtle.

Recent DNA analysis confirms that Atlantic and Pacific populations are genetically distinct lineages of a single species. In turn, nesting Pacific leather back populations are separated into two genetically distinct populations (eastern and western populations).

B)Humans have long hunted adult sea turtles for food and for their shells and other parts. In Indonesia, for example, shops are full of turtle souvenirs, turtle-skin bags, jewelry made from shells, and stuffed turtles, all of which are marketed to tourists.Sea turtles have suffered from the growing taste for turtle soup, considered a delicacy in Europe. Leatherbacks are killed to be rendered into oil for caulking boats in the Persian Gulf, for use in oil lamps in Papua New Guinea, and for medicinal use in the Caribbean. In the Solomon Islands, hunting sea turtles, including leatherbacks, is considered an important cultural event. Japan historically has been the largest importer of sea turtle products in the world. Between 1970 and 1989, Japan imported 1.5 million pounds (680 metric tons) of shell, which represents about 700,000 dead turtles.

Another video

Another video

Ans:The largest leatherback turtle ever found was an 8.5-ft-long 

ans: From the video,I learnt that a leatherback turtle can up to 5 refrigerator (900kg)

b)

Why are they going to be extinct

Ans: Because of us

Ans: They are endangered beacause we,humans throw plastic bags, canned foods, etc.

Another reason is land creatures such as crabs kill the poor hatchlings .

We must do our part to save them!!!!! :(

Watch this video and pity them!

Why are Leatherback Turtles critically endangered ?

ANSWER: It is because they are being threatened and out of 1000 eggs only one survive.

Ans:There's alot e.g:Human hunt them for their meat,shell and eggs.

A:

A THEY NEED TO GRIP THEIR FOO

A:

Leatherback Sea Turtles have been here for over 65 million years. They have witnessed the fall of the dinosaurs and the rise of humanity. Their habitat spans the globe from the North Atlantic near the Arctic Circle to the South Pacific around New Zealand. Extraordinary creatures, they hold important secrets about biology and medicine. Leatherbacks are the largest turtle, reaching a shell length of 1.7m and a mass of 700kg. In 1980 there were over 115,000 adult females, but there are now less than 25,000 worldwide, and they are close to extinction in the Pacific Ocean. If action is not taken soon to protect leatherbacks in the ocean and on nesting beaches the leatherback will disappear in our lifetime.

All the Earth’s seven sea turtle species are endangered. The United States waters are home to six of the species, including the Gulf of Mexico, where the 2010 BP oil spill devastated much of the turtle population. Fishing, climate change, tourist density and coastal manufacturing have been closing in on the habitats of turtles throughout the last century and actions of conservationists like our guest, Drexel University biologist and ecologist JIM SPOTILA, help to slow the decline of turtles in the 21st century.

Dermochelys coriacea is a wide range of marine turtles with flexible leathery carapace; largest living turtle

b) from this video,i learned that the leatherback turtle are the largest reptile in the world.

Leatherbacks are the largest turtles on Earth, growing up to seven feet (two meters) long and exceeding 2,000 pounds (900 kilograms). These reptilian relics are the only remaining representatives of a family of turtles that traces its evolutionary roots back more than 100 million years. Once prevalent in every ocean except the Arctic and Antarctic, the leatherback population is rapidly declining in many parts of the world.

While all other sea turtles have hard, bony shells, the inky-blue carapace of the leatherback is somewhat flexible and almost rubbery to the touch. Ridges along the carapace help give it a more hydrodynamic structure. Leatherbacks can dive to depths of 4,200 feet (1,280 meters)—deeper than any other turtle—and can stay down for up to 85 minutes.The video below is about a baby leatherback turtle crawling into the sea.