An Octopus cyanea hunts with a blacktip grouper on one side and a blue goatfish on the other. Octopuses don’t always hunt alone — but their partners aren’t who you’d expect. A new study shows that ...

Collaborating with a cephalopod isn't risk-free. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Why do octopuses have eight arms? The better to ...

Octopuses in the Red Sea often hunt together with other predatory fish—and sometimes hit them. New videos suggest they're keeping fish in line. Day octopuses in the Red Sea team up with up fish to ...