This typical fish is known to encounter humans, but poison present in it can be as dangerous as the poison of blue-ringed octopus. Do not get induced by its colorful exterior and try to stay away from it
Stranger than fiction. Pyura chilensis--the living rock. This animal looks just like a rock, but is a sea creature found off the coast of Chile and Peru. It is immobile, always born male, and secretes the rare mineral vanadium. Locals eat it in stews.