The octopus has a venomous beak, but the shrimp can punch with the force of a bullet—who will win? | National Geographic

Would octopus poison kill a squid? | What If

Octopoteuthis deletron, also known as the octopus squid, only has eight arms (like its octopus relatives). This species of squid is impressive in many different ways. Their arms are bioluminescent, with light-producing photophores at the end of each arm. ⁠They also have a fascinating way of protecting themselves when threatened by predators. Like a lizard that detaches its tail when attacked, these squid can detach their bioluminescent arm tips, leaving a wiggling arm with a flashing photophore