Macrobenthos refers to large organisms living on or at the bottom of a body of water. This category includes various species ranging from polychaete worms, mollusks, and crustaceans to sea stars and sea cucumbers. Synonyms for the term macrobenthos include benthic fauna, bottom-dwelling creatures, and large bottom-dwelling organisms, among others. Benthic fauna, specifically, refers to the community of organisms that live in or on the seabed. The term bottom-dwelling creatures is self-explanatory, indicating the location of the organisms, while "large bottom-dwelling organisms" emphasizes the size of the creatures. Overall, these synonyms provide alternatives to the use of the term macrobenthos, allowing for greater flexibility in scientific writing and communication.