The great white shark and the mantaray. Would you believe that I saw these fellows while deep sea diving? Or perhaps I was at the Melbourne aquarium?? Either way the sea creatures are absolutely stunnning and in most cases, absolutely poisonous. I learned the difference between poisonous and venomous. A creature is poisonous when you die if you eat him. A creature is venomous if it can put venom into you. It helps to remember that the vast ocean is the only place on planet Earth that has not been fully explored. I wonder what other creatures exist out there??