Small Cute & Deadly

    The blue-ringed octopus is 5 to 8 in, but its venom is powerful enough to kill humans. No blue-ringed octopus anti venom is available yet making it one of the deadliest reef inhabitants in the ocean.
      The octopus produces venom containing tetrodotoxin, histamine, tryptamine, octopamine, taurine, acetylcholine, and dopamine.The major  neurotoxin component of the blue-ringed octopus is a venom that was originally known as maculotoxin but was later found to be identical to tetrodotoxin, a neurotoxin also found in puffer fish and some poison dart frogs that is 10,000 times more toxic than cyanide.