Originally posted by ndmmxiaomayi:
Turtle, tortoise, terrapin - what's the difference?
I've stared at loads of pictures, read up a lot, but never seem to understand the differences between them.
All turtles, tortoises, and terrapins are reptiles. Scientists often refer to them as chelonians, because they are in the taxonomic order called Chelonia (from the Greek word for tortoise). They all have scales, lay eggs, and are ectothermic. So why the different names? Those common names usually refer to differences in where the species live and how they use their habitat. But the names are also used differently in other parts of the world. For instance, in Australia only sea turtles are called turtlesÂ–everything else is called a tortoise! But here are some generally accepted differences between the types of chelonians.Turtle
Â— Spends most of its life in the water. Turtles tend to have webbed feet for swimming. Sea turtles (Cheloniidae family) are especially adapted for an aquatic life, with long feet that form flippers and a streamlined body shape. They rarely leave the ocean, except when the females come ashore to lay their eggs. Other turtles live in fresh water, like ponds and lakes. They swim, but they also climb out onto banks, logs, or rocks to bask in the sun. In cold weather, they may burrow into the mud, where they go into torpor until spring brings warm weather again.Tortoise
Â— A land-dweller that eats low-growing shrubs, grasses, and even cactus. Tortoises do not have webbed feet. Their feet are round and stumpy for walking on land. Tortoises that live in hot, dry habitats use their strong legs to dig burrows. Then, when itÂ’s too hot in the sun, they slip underground.Terrapin
Â— Spends its time both on land and in water, but it always lives near water, along rivers, ponds, and lakes. Terrapins are often found in brackish, swampy areas. The word terrapin comes from an Indian word meaning "a little turtle.Â”http://www.sandiegozoo.org/animalbytes/t-turtle.html