It's Day 2 of #OctopusOctober! By rapidly drawing water into and out of a funnel-like structure called a siphon, octopuses can jet through the water, quickly moving away from predators—or toward prey. Adults may dine on crabs, shrimp, clams, snails, fishes and even other octopuses, using their beaks to break open hard-shelled prey. 🐙 | National Aquarium

The siphon is hollow and open on both ends so they can position it and connect to whatever bodily function they need. #thereefdoc #octopus #marinebiology #octonation #marineaquarium #cephalopod #cool | The Reef Doc