turtle wiki:
[ext Turtles are reptiles of the order Chelonia, most of whose body is shielded by a special bony or cartilagenous shell developed from their ribs. The term turtle is usually used for the aquatic species, though aquatic fresh-water turtles are also called terrapins. The term is sometimes used (esp. in North America) to refer to all members of the order, including tortoises, which are predominantly land-based. The order of Testudines includes both extant (living) and extinct species. About 300 species are alive today. Turtles are now highly endangered, largely due to beach development and over-hunting.
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Swim wiki:
>This article is about swim, a term for frequency variations. Please see the article on swimming for more information about the water sport and moving through water. Swim is short term variations of the significant instants of a digital signal from their ideal positions. Swim occurs on a longer time scale than jitter but shorter than wander.
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