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.).
Confidence votes 84. Most crabs are omnivores but prefer to eat meat such as bivalves (clams, osters, ect.), because they can assimilate more nutrients from the meat. The plants are low in nitrogen, which is an important nutrient for the crabs. However, there are a few species of crabs that are strictly herbivores.