blue ring octopus - Produce a strong Nero Toxin called Tetrodotoxin. this Octopus uses as a defensively. It also has a Toxin that is Harleysville to humans and is used on its prey. This little fellow is found in Tide poles in semi warm climates.
Blue clover - by ~serdarsuer. Octopi are among the most intelligent and behaviorally flexible of all invertebrates. All octopi are venomous, but only one group, the blue-ringed octopus, is known to be deadly to humans.