Octopuses have three hearts, nine brains, and blue blood
Two hearts pump blood to the gills and the third pumps it to the rest of the body. The main heart actually stops beating when they swim, which is why they prefer crawling. Evolution is wild.
Two hearts pump blood to the gills and the third pumps it to the rest of the body. The main heart actually stops beating when they swim, which is why they prefer crawling. Evolution is wild.