As you already know nature is no stranger to conflict and struggle to survive.
And this is even more true for the animals we see underwater. Here a group of 3 Whitetip Reef Sharks attack a Giant Moray Eel, and in a brutal fight tearing it to pieces.
Ironically enough only a year a go we saw the exactly opposite when a Giant Moray Eel attacked a Whitetip Reef Shark and ate it whole.
Moray Eel vs. Moray Eel
But's it's not just sharks against Moray Eels, underwater everyone is potentially an enemy or dinner.