Turtles are sea turtles that are found in all oceans, according to scientific data, turtles have existed since the end of the Jurassic period (145-208) or the same age as the dinosaurs. Turtles have a pair of forelegs in the form of paddle legs that provide dexterity in swimming and in the water. Even though they have wandered in the water for their whole life, occasionally the vertebrate group of reptiles still has to occasionally rise to the surface of the water to take a breath. That's because turtles breathe with lungs.
Turtles generally migrate long distances with a time not too long of 3000 kilometers and can be traveled in 58 – 73 days.
Turtles have a different egg-laying cycle from every 2-8 years. While the male turtle spends his entire life in the sea. Females occasionally stop ashore to lay eggs. Female turtles like sandy beaches that are deserted from humans and sources of noise and light as a place to lay their hundreds of eggs, in a hole dug with a pair of hind legs. When landing to lay eggs, disturbances in the form of light or sound can make the turtles give up their intentions and return to the sea. also uses magnetsm as an aid to return to their hometown when they are hatchlings, and return when they are adults to lay eggs.
Not a lot of regeneration produced by a turtle. Of the hundreds of eggs that are released by a female turtle, at least a dozen hatchlings make it to the sea again and grow up. It also does not take into account the hunting factor by humans and their natural predators such as crabs, birds, and beach rats, as well as large fish as soon as the hatchlings touch deep waters.
In places that are popular as turtle nesting sites, hatcheries are usually built now to help with survival rates.
Currently there are only seven types of turtles that still survive, namely the green turtle (Chelonia mydas), Hawksbill turtle (Eretmochelys imbicata), Kemp's ridley turtle (Lepidochely kempi), Lekang turtle (Lepidochely olivacea), leatherback turtle (Dermochely coriacea), Flatback turtle ( Narrator depressus ), the loggerhead turtle ( Careta careta )
Of these seven species, only the Kem's ridley turtle which has never been recorded has been found in Indonesian waters.
Of these species, the leatherback turtle is the largest with a body length of 2.75 meters and a weight of 600 – 900 Kilograms. The tortoise is the smallest with a weight of 50 Kilograms. However, the species most often found is the Green turtle.
Turtles, especially green turtles, are plant-eating animals that occasionally prey on several small animals.
Almost all types of turtles are included in the list of animals protected by national and international laws because they are feared to be extinct due to the decreasing number.
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