This is not nudibranch or sea slug
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Identification is verified by Richard Willan, Nudi Pixel expert
Comment from Richard Willan: This is a Proboscis Worm (phylum Echiura: family Bonelliidae), not a mollusc. Bonellia viridis is a tropical species, that hides in a burrow under coral during the day and extends its long bifurcated proboscis at night up to 30 cm. The animal in this photo has been completely removed from its burrow and its proboscis is the light green structure on the right half of the body. It is an active predator, grabbing passing soft-bodied invertebrates, including opisthobranchs, to feed upon. This individual is a female; the male is tiny and it lives in the same burrow as the female. The male rarely feeds and it serves largely to fertilise the female.
Thanks to João Pedro Silva for suggesting identification for this species
Comment from João Pedro Silva: Agree on the identification but it must be said that Bonellia viridis is not a tropical species. I've never seen it in the Indian Ocean but it's very common in the Eastern Atlantic (Portugal). At least here, the proboscis of the female is much larger (up to more than 1m long) and darker. I've only seen the body of a female Bonellia viridis once (it grew inside a juice packet recovered during an underwater clean-up in Sesimbra, Portugal) and it was of a much lighter green than this. Even during the day one can see proboscis extended from the small holes in the rock, with the T-shaped end visibly crawling in the bottom.
|Photographer:||Angelo de Faveri|
|Camera:||Olympus EVOLT E-410 › View EXIF properties|
|Taken on:||August 21, 2009|
|Posted:||7 years ago|
|Updated:||7 years ago|