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The eight-armed octopus has been depicted as a scary, gigantic monster for centuries! Today, we know that of hundreds of species discovered; only one species (blue-ringed octopus) contains a poisonous ink that is toxic enough to hurt people.
These strange looking creatures of the sea have almost no hard parts at all, except for a beak which they use to break open shells! They have large brains contained in their huge heads and each of their eight arms is extremely agile. These arms have lines of suckers on the under surface which they use to attach to the ocean floor and catch prey.
Did you know? Octopuses are known to be extremely smart! Experiments have shown that these marine animals can learn to unscrew bottle caps to search for food!