This giant cephalopod dwarfed mosasaurs and other massive marine reptiles that lived during the time of the ...

This unassuming octopus pairs bacterial chemistry with evolutionary efficiency to deliver one of the most powerful defenses in all of the ocean.

Octopuses have gotten a reputation for being cunning camouflagers and intelligent creatures. But some are known for a more ominous reason: They're deadly. One group — the blue-ringed octopus (genus ...

This octopus survives in plain sight. Here’s how it adapts its body in real time to mirror dangerous species and navigate one of the ocean’s most exposed environments.