1. Marine invertebrates: Mole crabs primarily feed on small invertebrates found in the intertidal zone and shallow waters. Their diet includes:
- Small crustaceans, such as amphipods, isopods, shrimp, and barnacles.
- Mollusks, including bivalves like clams and cockles, as well as gastropods like limpets and snails.
- Polychaetes, such as marine worms.
2. Fish: Mole crabs may occasionally feed on small fish, especially juvenile fish that venture too close to the shoreline.
3. Algae and plant material: They can graze on algae, seaweeds, and other plant matter found on the shore or in the water.
4. Scavenging: Mole crabs are also scavengers and may feed on dead or dying animals, including fish, crustaceans, and mollusks.
5. Microbial films: The microbial films that form on rocks, sand, and other surfaces in their habitat can also be a source of food for mole crabs.
It's worth noting that different mole crab species may have specific dietary preferences or adaptations based on their habitat and the available food sources.