Mainly sharks, but killer whales (orca) too occasionally.
Sharks, fish and manta rays are predators of the starfish. Larger starfish also prey on and attack smaller starfish.
Sharks, Manta rays, and large bony fishwell a starfish is a predator to a shark and Manta ray also boney fishes and they could be enemies with mussels oysters and clams
manta ray
what is a male manta ray called
No a Manta is a shark.
The manta ray is a shy creature, but is respectful and harmless.
A Manta Ray keeps its young underneath them at a times
Manta (as in Manta Ray), Santa.
Manta birostris
me
Scientists are still trying to unravel all the mysteries of the elusive manta ray. There are some indications that large warm-water sharks (e.g. tiger sharks) and orcas prey on mantas. However the main predator is man. Small scale subsistance fisheries have existed for centuries, but in recent years demand has grown exponentially to supply the shark fin soup and Chinese medicine industries. See my profile for links to more info on manta rays.