Mysterious creature

SirenBethany

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Please can anyone help me identify this creature? not a tube worm I don't think. But has long tentacle like structures that it extends and can retract them extremely quickly.

IMG_20240721_162530795.jpg
 

BristleWormHater

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Please can anyone help me identify this creature? not a tube worm I don't think. But has long tentacle like structures that it extends and can retract them extremely quickly.

IMG_20240721_162530795.jpg
I have these too, it's a chaetopterid/parchment worm. They are completely harmless.
 

ISpeakForTheSeas

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So I was researching and I think it's a spionid worm
Spionids look very similar to Chaetopterids - in this case, yours is likely a Chaetopterid:
In this case, it's probably a Chaetopterid worm - they're very similar to Spionid worms, but they tend to prefer burrowing in the sand instead of in the rocks, and they reportedly tend to have longer palps.

That said, I say probably because to make a proper ID involves removing the worm from its tube and getting pics of the body out of the tube, which just isn't feasible.

Generally, these aren't a problem unless their numbers start getting out of hand.
 

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