Front teeth grab prey. The inner jaws grab it again and pull it back to help it swallow large prey.
This game really messed up having no separation between power and air. You could get smashed out by goombas on land then just have a little dip to recharge. Part of the charm I suppose, I love that game.
When a fish bites your heel and it looks like an eel, that's a moray!
When an eel bites your thigh and you bleed out and die, thats a Moray!
If it lurks on a reef and has two sets of teeth, that's a moray!