Octopuses are basically tiny sea geniuses

They use their siphons to launch silt and shells at other octopuses to express irritation.

Blanket octopuses tear off venomous jellyfish tentacles and wield them as weapons against predators.

Two thirds of an octopus's neurons are in its arms, letting them think and act independently.

An octopus brain has 500 million neurons, putting them in the same league as small mammals.