The jelly fish is the most dangerous fish in the ocean . It can kill a guy in thirty seconds with a touch of its tentacles . Its favorite food is shrimp but swimmers need to be wary of the jelly fish because it eating is shrimp .Swimmers in the Pacific Ocean need to be extra  careful because they don’t need to be sting . The jelly fish look like a blue jar of jelly with tentacles, it is also named the sea wasp .