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 ...

Octopuses are among the most fascinating and intelligent creatures of the ocean. Known for their incredible problem-solving skills, shape-shifting abilities, and remarkable intelligence, these ...