You'll notice seahorses almost immediately in Dave the Diver, but you can't catch them right away. They aren't just set decorations for the Blue Hole, thankfully, and there's a entire separate list of ...

The Moray Eel is a species you can find in the Blue Hole Shallows at night. The eels are around during the day, as well, though they hide in caves and attack you. If you want to catch one, you'll need ...