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Alicella gigantea

Alicella gigantea is a giant species of amphipod that lives in the deep sea. It is sometimes referred to as the "supergiant amphipod", with some individuals of this species reaching 34 cm (13 in) in length, making it the world's largest species of amphipod. The large body size is sometimes presented as an example of abyssal gigantism, though the specifics of this trait remain under investigation. Its genome is exceptionally large, which may be linked to the large size of the body. The species lives only at 4,850–7,000 m (15,910–22,970 ft) in depth. Although rarely encountered, A. gigantea is considered cosmopolitan and may inhabit up to 59% of the world’s oceans. It is primarily a scavenger of carrion, although the diet varies with age. It has been inferred that individuals of this species have long life spans and can live for over 10 years. Despite its isolation from the surface, human pollutants such as DDT and chlordane have been detected in specimens. (Full article...)