Oysters are what are known as filter feeders; they filter microscopic organisms out of the water. They therefore do not have to attract prey. The prey is always there, in the water, carried by currents, and oblivious to its fate.
Plankton
sea stars prey are clams,oysters and mollusks
they dont they ambush there prey
to attract their prey so they go closer and then they eat their prey
nnnnoooooo hawks eat mice as prey
maybe
The Anglerfish.
To attract prey.
Fireflies light up to attract a mate or prey.
they attract it with their "light" and when its close enough, it bites
The oyster borer eats the oyster = Predator/Prey relationship
There is no single answer to this question, an organism may use luminescence to attract a mate, attract prey, distract predators, or other uses.