Rare look at the stunning Barreleye with transparent head a small deep-sea argentiniform fish comprising the family Opisthoproctidae. It's found in tropical-to-temperate waters of the Atlantic Pacific and Indian Oceans.
Barracuda: tiny brained, scary looking, prehistoric fish that shadow reef divers off to the side. Be very sure you have NO shiny gear. this is said to provoke attacks from these lightning fast predators.