Sea Spiders Use Their Guts, Not Hearts, To Pump Oxygen

Ashley Johnson
Mon, 23 Oct 2017 12:28:29 -0700

Sea spiders, which have inhabited Earth for over 500 million years, are fascinating creatures. The marine arthropods, which range in size from a millimeter long to as big as a dinner plate, have eight jointed legs that convene around a tiny body. Since their torsos are so small, they use their legs to conduct normal body functions such as digestion and reproduction. Now, it seems the creatures also have a unique breathing mechanism.