I ran into these when I was going to herbivore island with some megalodon's they all died to 3 of these things. RIP happy shark, finny and neebs (one of them was green so I named it neebs)
Never go near it with your Dino, it will kill you, your Dino, your friends, your family, the guy down the street, some guy over in Africa, all while they won't do a thing to attack it.