Indonesian Mimic Octopus

The Indonesian mimic octopus, Thaumoctopus mimicus, takes camouflage and mimicry into a new level:

This octopus is able to copy the physical likeness and movement of more than fifteen different species, including sea snakes, lionfish, flatfish, brittle stars, giant crabs, sea shells, stingrays, jellyfish, sea anemones, and mantis shrimp. This animal is so intelligent that it is able to discern which dangerous sea creature to impersonate that will present the greatest threat to its current possible predator.

Ursi's Blog has the video clip of the mimic octopus in action: Link [embedded YouTube clip]