You can find the Yeti Crab near thermal vents in some of the coldest parts of the ocean. There, they live in a precarious position: move too close to the vents and they will instantly fry; move too far and they can die of hypothermia. Their "fur" is actually blonde setae, bristles that enable them to harvest their main source of food: bacteria. They dance around, waving their claws through the water to get a constant flow of oxygen and grow the bacteria they subsist on.