copula - an equating verb (such as `be' or `become') that links the subject with the complement of a sentence. copulative, linking verb. verb - a content word that denotes an action, occurrence, or state of existence.
Different species of crabs eat different foods. Depending on the species, they may eat plankton, worms, shrimps, prawns and other shellfish, and they scavenge for animal and/or plant remains. 1  They are detrivores. 2  They will consume animal as well as plant matter (algae, etc.).
List of Foods Hermit Crabs Can Eat. eHow. Hermit crabs are scavengers by nature -- so when you're feeding them, almost any **healthy** food is worth trying. Like most living creatures, they enjoy having different foods at each meal.