Octopuses

Researchers in Australia found that female octopuses use their arms to throw silt, algae and shells at unwanted male mates when they feel harassed.

"My Octopus Teacher" directors speak about the movie and the unique octopus living in a kelp forest off the coast of South Africa.

The dramatic footage sees a crab take on the deadly blue-ringed octopus—and survive.

"If she is dreaming, this is a dramatic moment. You could almost narrate the body changes and narrate the dream," the scientist said.

Some scientists really do think it's possible.

The material could make great military camouflage devices.

These marine animals can even change the texture of their skin to make themselves look like coral.

It's unclear what effect this trend may have on the health of the ocean.

The octopuses sometimes wrestle after they display to one another.