The eight-tentacled king of the sea, the octopus, has a long list of daily threats to its life, but now researchers have discovered that knotting itself into oblivion isn't one of them.

Researchers at Ben Gurion University have discovered that the the camouflage ability of some octopi may indicate that they are a much cleverer species than previously believed. The recent research has raised some interesting questions, such as: how can an octopus perfectly match its surroundings – even though it is color blind?