An Octopus Can Squeeze Through Any Gap Larger Than Its Beak

Japanese researchers recorded the deep-sea giant squid off the Ogasawara Islands.

The dark cloud confuses the predator's vision and, in some species, dulls its sense of smell.

Its relatives date back roughly 500 million years, and it is the only cephalopod with a chambered outer shell.

Their pupils are shaped like the letter W, and they use them to see very well in varied light.