Pustular Triton Snail

Argobuccinum pustulosum

Argobuccinum pustulosum features a large, swollen shell characterized by prominent varices, making it distinct from similar species. The maximum recorded shell length for this species is 80 mm. This predatory sea snail inhabits various regions, particularly in the Southern Atlantic and Indo-Pacific, ranging from Chile to southern Namibia and extending east to Chatham Island. It is typically found on or around coastal rocks and intertidal zones at depths between 0 to 100 meters, with most specimens trawled or dredged from shallower waters, particularly between 20 to 100 meters. The species thrives in tropical climates, with a distribution that encompasses latitudes from 26°S to 57°S and longitudes from 76°W to 175°W. As a carnivorous gastropod, it feeds on a variety of prey, including polychaetes, bivalves, ascidians, gastropods, echinoderms, and crustaceans. Breeding occurs through a gonochoric reproductive strategy, where individuals broadcast spawn, leading to planktonic larvae that develop into juvenile snails before reaching maturity. Encounters with this species during dives can be exciting, as divers may observe its unique shell and predatory behavior in its natural habitat. The conservation status of Argobuccinum pustulosum is not evaluated.