female blue ringed octopus with eggs sitting on a piece of coral, close up shot of head, one egg visible

cephalopoda octopus tentacle octopodidae hapalochlaena scuba tetrodotoxin reef eggs underwater bottom critter coral pacific protect sea neurotoxin female suckers poisonous blue ring ocean wildlife animal beauty fauna swim bizarre small ringed wild arms marine pregnant blueringed hidden muck mother blue nature natural deadly tropic venom water colorful tropical life