Image of a Greater blue-ringed octopus. <i><a href="//commons.wikimedia.org/wiki/Hapalochlaena_lunulata" title="Hapalochlaena lunulata">Hapalochlaena lunulata</a></i>. Taken at Tasik Ria, North Sulawesi, Indonesia.
<a href="//commons.wikimedia.org/wiki/User:Jnpet" title="User:Jnpet">Jens Petersen</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>