The term “Cyamus” refers to a genus of small marine crustaceans within the family Cyamidae, commonly known as “whale lice.” These organisms are ectoparasites that typically live on the skin of whales and other marine mammals. They are adapted to a life spent on their hosts, feeding on dead tissue, and are often flattened in shape to adhere closely to their hosts. If you need more information or context about “Cyamus,” feel free to ask!