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Description: The green hydra is fresh water polyp of about 1-2 mm in size.This fascinating animal lives underneath the leaves of water lilies. It has no eyes and no mouth, however it is an intimidating predator for microscopic crustacea. It's arms contain, like jellyfish, stinging cells to paralyze and kill the prey. To eat, the hydra just tears open its own body-membrane and crams the prey into her body. The membrane then heals very quickly. The hydra in the movie has just caught a copepod and tries to swal