PromotedSpecies introCountry intro
Longibrachium arariensis
Coconut Garden, Lembeh.
Seen during a night dive it was a very puzzling organism for me to identify. At first I thought it could be a juvenile bobbit worm but it seemed to be a different worm. In Facebook they gave me the right ID. Longibrachium consists of 5 species, one is in the Atlanticum so I can discard it. I place tentatively L. arariensis which has been identified near Japan, and therefore relatively closer to Indonesia.
A polychaete worm of the Onuphid family. Onuphid polychaetes are tubicolous marine worms commonly reported worldwide from intertidal areas to hadal depths.
Antennae of about equal length, comparatively short, reaching to chaetigers 6 to 8. Anterior four
pairs of parapodia prolonged, with three distally recurved long hooks and 6–10 small hooks in each; hooks of
both sizes with two rows of immovable spines; chaetal sacs extending to chaetigers 12–23; subacicular hooks
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