Octopuses possess three hearts (two pump blood to gills, one to the body), their main heart stops beating during swimming which is why they prefer crawling, and they have blue blood due to copper-based hemocyanin instead of iron-based hemoglobin found in most animals.
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Bet you didn’t know that!!…#ocean追加:
Did you know an octopus has three [music] hearts? Two hearts pump blood to the gills, and the third pumps blood to the rest of the body. But here's the wild [music] part. When an octopus swims, its main heart actually stops beating, which is why they [music] prefer crawling instead of swimming. Oh, and their blood is blue. Octopuses might actually be the closest thing [music] we have to aliens on Earth. Like and subscribe for more insane facts.
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