Question: What do crabs eat

Thomas Doherty-Bone answered on 19 Nov 2013:

It depends on the species, but they are often omnivorous (eat everything), like ourselves. Most species eat smaller animals or large dead animals, plant matter (sea weed). One species does a very extraordinary filter-feeding where they get a clump of sand, filter out all the important matter and leave the used sediment in a ball on the ground.

Another species of crab has feathery filters instead of claws and catches particles in the water.

Another species, the terrestrial, giant “Coconut” Crab eats coconuts, but other bits of food that it comes across.

The crabs I care for in the lab I feed special crab pellets provided by aquarium shops. Gives them all they need. Not sure whats in it.