Ptilometridae
Ptilometridae is a family of small, deep-sea crustaceans belonging to the order Amphipoda. They are commonly known as “bird-beak amphipods” due to their distinctive, elongated rostra (beak-like structures). This family comprises a single genus, Ptilometra, with several species found in the depths of the Atlantic, Pacific, and Indian Oceans.
Characteristics
Ptilometridae are characterized by their slender bodies, often measuring less than 2 cm in length. Their most prominent feature is the elongated rostrum, which can be as long as the body itself. This rostrum is covered in numerous bristle-like appendages, resembling feathers, hence their common name. They also have a distinct dorsal hump on the carapace, giving them a slightly arched appearance.
Environment
Ptilometridae are primarily found in the abyssal and hadal zones of the ocean, inhabiting depths exceeding 1000 meters. They are often associated with benthic communities, living on the seafloor or among deep-sea sediments. Their feeding habits are not fully understood, but they are believed to be scavengers, feeding on dead organisms and detritus.