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Here’s a fact that sounds fake but is actually real. Octopuses have three hearts. Two hearts pump blood through their gills, and one pumps blood to the rest of the body. But here’s the weird part. When an octopus swims, one heart actually stops beating. That’s why octopuses prefer crawling along th…

Here’s a fact that sounds fake but is actually real. Octopuses have three hearts. Two hearts pump blood through their gills, and one pumps blood to the rest of the body. But here’s the weird part. When an octopus swims, one heart actually stops beating. That’s why octopuses prefer crawling along the ocean floor instead of swimming.