* Plankton: This includes tiny organisms like algae, diatoms, and other microscopic creatures that are suspended in the water.
* Organic debris: Sand crabs also feed on decaying plant and animal matter that they find in the sand.
* Small invertebrates: They may occasionally eat tiny worms, crustaceans, and other small invertebrates they encounter.
They use their small, feathery appendages (maxillipeds) to filter food particles from the sand and water. They constantly sift through the sand, using their antennae to detect food particles.
So, while they don't actively hunt for large prey, sand crabs play a crucial role in the beach ecosystem by consuming and recycling organic matter.