Named for its smooth, rubbery skin.
Status: Critically endangered
Size: The largest and deepest-diving of the sea turtles, ranging 4 to 8 feet long and weighing 700 to 1,500 pounds.
Range: Lives in the open water of the temperate and tropical Pacific, Atlantic and Indian Oceans. Nests in tropical and subtropical regions, including beaches from Melbourne to Fort Lauderdale, from March to July.
Food: Jellyfish and other soft invertebrates.
Life span: 45 years, estimated. Believed to be sexually mature at 16.
Source: U.S. Fish and Wildlife; Loggerhead Marinelife Center