Here's how it works:
* Water currents: Oysters draw water into their shells through a siphon.
* Filtering: They filter the water using their gills, which trap tiny food particles like phytoplankton, zooplankton, bacteria, and algae.
* Digestion: The food particles are then passed to the oyster's digestive system where they are broken down and absorbed.
So, the answer to your question is that oysters don't have prey in the traditional sense. They rely on microscopic organisms for their food.