6. Lion Fish
Many call the lionfish is the most beautiful sea creatures in the world. You can find them in the Caribbean and eastern Atlantic. Lionfish are not deadly, they do have a venom but not lethal, however, the pain you will experience if you get stung is so severe that people say that you wish you might die.
One fisherman whose foot is stung says that he wants it to be amputated, that’s how bad the pain was. On the good side, Lion Fish is not offensive. If you don’t do anything that it might perceive as dangerous. It probably won’t attack you.