The octopus is one of the coolest animals in the sea. For starters, they are invertebrates. That means they don’t have backbones like humans, lions, turtles, and birds. That may sound unusual, but ...

Cephalopods, like humans, have camera-like eyes that focus light with a lens. The two-spot octopus gets its name from the ocelli, or iridescent blue spots, which are false eyes to startle predators ...

Blanket octopus pairs are some of the undersea world’s oddest couples. What’s so startling is the size difference: Males are about the size of a walnut—less than an inch long—but some females can ...

Amongst millions of sea creatures, octopuses are some of the most extraordinary marine species across the world. From their fluid body movements to their ability to open jars and worm their way ...

Some facts about octopuses: they're venomous, they taste with their skin, they use tools, they can solve puzzles, Aristotle thought they were dumb, Jacques Costeau thought they were smart, they can ...