Turtle

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Baby Turtle

FotoDawg on Flickr A different kind of flight

[ r ♥ c e y t ♥ y ] {I br♥ke for bokeh} on Flickr Touché Turtle

Stuart Robertson Reynolds on Flickr Galapagos tortoise

Zoos - North Carolina Zoo - Turtle - Fotopedia

ucumari on Flickr Tortoise

Ted Abbott on Flickr ET ???

Zoos - North Carolina Zoo - Turtle - Zoo - Fotopedia

ucumari on Flickr Here's looking at you, kid.

Endangered Species - Green turtle - Endangered - Endangered species - Conservation status - IUCN Red List - Animals - Turtle - Photo of the day - Fotopedia

Soller Photo on Flickr Great Barrier Reef, Cairns, Australia

World Heritage Sites - Great Barrier Reef - Asia - Australia - List of World Heritage Sites in Asia and Australasia - World Heritage Site - Oceania - Animals - Turtle - New7Wonders of Nature - Underwater photography - Fotopedia

Leonard Low on Flickr untitled

Hernan vargas on Flickr Baulita

Endangered Species - Leatherback turtle - Critically Endangered - Conservation status - Critically endangered species - IUCN Red List - Animals - Turtle - Fotopedia

Jual on Flickr Sunbathing Sea Turtle, Punalu'u Black Sand Beach Park

djwudi on Flickr The Green Sea Turtle

Endangered Species - Green turtle - Animals - Turtle - Turtles - Sea turtle - Fotopedia

rexb on Flickr Green Back Turtle, West Coast Barbados

Animals - Turtle - Turtles - Barbados - Places - Fotopedia

TarikB on Flickr Turtle

snowsoulmate on Flickr honu = Hawaiian green sea turtle (ハワイアオウミガメ) #121

Nemo's great uncle on Flickr Tiny Tiny Turtles

Blacknell on Flickr 20081225-JM-073

Raphaël Fauveau on Fotopedia untitled

Reptiles - Testudines - turtles - Turtle - Fotopedia

Henk Wallays on Fotopedia Confusion

Endangered Species - Leatherback turtle - Animals - Turtle - Fotopedia

Hybrid Vigour on Flickr The Turtle

Thomas Bucher on Fotopedia

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Wikipedia Article

Turtle

Turtles are reptiles of the order Testudines (the crown group of the superorder Chelonia), characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield. "Turtle" may either refer to the Testudines as a whole, or to particular Testudines which make up a form taxon that is not monophyletic—see also sea turtle, terrapin, tortoise, and the discussion below.

The order Testudines includes both extant (living) and extinct species. The earliest known turtles date from 215 million years ago, making turtles one of the oldest reptile groups and a more ancient group than lizards and snakes. About 300 species are alive today,^{[citation needed]} and some are highly endangered.

Like other reptiles, turtles are ectotherms—varying their internal temperature according to the ambient environment, commonly called cold-blooded. However, leatherback sea turtle have noticeably higher body temperature than surrounding water because of their high metabolic rate.

This article is licensed under the Creative Commons BY-SA License. It uses material from Wikipedia content.