London aquarium 19
Jellyfish move through the ocean waters with pulsating bodies that are comprised of 95% water, protein and mineral salts. Jellyfish can be as small as a pencil eraser or have tentacles that reach 100 feet from their squishy bodies. Of the 200 jellyfish species, 70 of them produce stinging cells that can sting a human being. Small poison filled cells are ejected when a jellyfish comes into contact with another organism. Jellyfish are predators of shrimp and other small marine animals; they use their stinging ability to stun their prey.