Parborlasia corrugatus is a conspicuous heteronemertean marine worm that occurs across the South American, sub-Antarctic, and Antarctic regions at depths ranging from the intertidal to 3950 meters. It is a large worm, reaching a length of up to 2 meters, with a wet mass exceeding 140 grams. It can be quite abundant, with reported densities ranging from 0.3 to 26.2 individuals/square meter, and is an important scavenger in antarctic benthic systems. (Heine et al. 1991; Thornhill et al. 2008 and references therein).
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