Common octopuses are widespread in tropical, subtropical, and temperate waters worldwide. They are also the most studied octopus species. Notably, they span 1 to 3 feet long, including arms. This is short compared to giant octopuses living under the deep sea.

Aside from their intelligence, their camouflage expertise is extraordinary, adapting color, skin texture, and posture seamlessly according to the substrate. Dive deeper into these types of marine mollusks by checking our list of octopus facts and types of octopus.