Port Jackson shark has distinguished teeth. The front teeth are sharp and small, suitable for holding prey, while the latter is broad and rounded for crushing and grinding the prey’s shells.

Triton is the large sea snail. That was close.

Crown-of-thorns starfish eat Coral.

As coral reefs provide homes and hiding places for all marine animals and plants, we do not need too many of the starfish.

Help is on the way. Tritons can detect the smell of crown-of-thorns starfish. Once tritons catch it, they cut its spiny body with serrated teeth. Then it is paralyzed by saliva of tritons.