A small blue-ringed octopus with visible rings beside a cracked crab shell, a cluster of tiny eggs, and a skull-and-crossbones warning symbol on a light gray background.

Small Enough to Hold, Deadly Enough to Kill 20 — Know the Blue-Ringed Octopus?

Octopuses & Squid

Difficulty

Hard

Questions

29

Volts

3/q

Fits in your palm, kills in minutes, and there's no antivenom. The blue-ringed octopus flashes sixty iridescent rings as a final warning before delivering tetrodotoxin through a painless bite. This quiz covers the deadliest cephalopod alive.

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