A plume of ink can help hide a cuttlefish as it scuttles away from a predator. But that smoke screen’s stench may also warn sharks to stay away. Nicknamed “swimming noses,” some sharks can sniff their ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. The murky ink from cuttlefish (Sepia officinalis) could help deter ...

An octopus has three hearts and long arms with suction cups. It probably seems very different from you. But you have the main ingredients of octopus ink in your body, too! I talked about octopus ink ...

Cuttlefish are masters of disguise: in milliseconds, they can drastically alter their skin pattern to blend in with their surroundings, a feat made all the more puzzling by their apparent ...