Blanket Octopus
Pictures

The blanket octopus actually uses the blanket for defense.

Blanket Octopus female diving. Blanket octopus pairs are some of the undersea world's oddest couples, with the female weighing 40,000 times more than the male.

Through sexual selection, the characteristics of a larger female and smaller male have evolved so dramatically that the male blanket octopuses are considered to be dwarf animals.

Faced with multiple predators – including fish, birds and whales – blanket octopuses are masters of camouflage.