These Amazing Facts About Octopus
Octopus relates to approximately 300 species of soft-bodied, eight-limbed molluscs of the order Octopoda. The order is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids
Octopuses are sea animals famous for their rounded bodies, bulging eyes and eight long arms. These cool critters live in all the world’s oceans, but they’re especially abundant in warm, tropical waters. Like their cousin, the squid, octopuses are often considered ‘monsters of the deep’, lurking in the depths of the seas. However, there are some kinds of octopus that live in relatively shallow waters
Octopuses have three hearts. Two of the hearts work exclusively to move blood beyond the animal’s gills, while the third keeps circulation flowing for the organs. The organ heart actually stops beating when the octopus swims, explaining the species’ penchant for crawling rather than swimming, which exhausts them.
Octopus arms have a mind of their own. Two-thirds of an octopus’ neurons reside in its arms, not its head. As a result, the arms can problem solve how to open a shellfish while their owners are busy doing something else, like checking out a cave for more edible goodies. The arms can even react after they’ve been completely severed. In one experiment, severed arms jerked away in pain when researchers pinched them.
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