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.).
To get that big, the crabs need to eat a lot. Environmental Graffiti explains: Coconut crabs come forth irregularly at night to feed, loot, raid and plunder. The crab is known for its ability to crack or pound open coconuts with the strong pincers or two large chelae it possesses in order to eat the contents. The soft white meat of the coconut forms the main part of the crab's diet.