Answer: Sea turtles, sometimes called marine turtles, are reptiles of the order Testudines and of the suborder Cryptodira.
Scientific name: Chelonioidea Rank: Superfamily, Higher classification: Cryptodira Mass: Green sea turtle: 350 lbs, Loggerhead sea turtle: 350 lbs, Kemp's ridley sea turtle: 89 lbs
Lifespan: So it is hard to accurately measure their life span over this long period of time. The most consistent estimate is about 80 years. There are seven species of sea turtles.