InterSPecific
- Most crabs have many natural enemies, or predators.
- Birds attack smaller crabs, sometimes carrying them high into the air and then dropping them on boulders to crack their shells.
- Fish with powerful, shell crushing jaws also eat crabs.
- Mant kinds of mammals, from seals to raccoon's, also look forward to eating crabs.
- Crabs eat small bits of plant and animal material that they find in the water and along the shoreline.