Tortle

Tortles are reptilian-looking humanoids with large shells on their backs that are capable of containing their entire bodies. They have leathery skins that vary between olive-green to blue-green hues. The dorsal portion of their shells is usually darker than their skins, while the ventral portion is lighter, usually with yellowish tones. Tortles rarely wear any clothing, favoring instead belts and harnesses to carry their belongings. They have little tolerance for cold, and usually migrate away from temperate areas when winter approaches.
Although generally poor swimmers, tortles are capable of floating on water and can hold their breath for over an hour. Their high buoyancy grants them the ability to cross swamps, mud, and quicksand with little difficulty.