Blue-ringed Octopus: This Deadly Creature's Venom is 1000 Times More Powerful Than Cyanide

There are four venomous species of the blue-ringed octopus and it is one of the deadliest sea creatures. The venom of the octopus, according to Ocean Conservancy, is 1000 times more potent than cyanide and is capable of killing up to 26 adult humans.