Help me identify the creature.

Andrey Grodno · Jan 27, 2022

Help me find out what it is. Size is about 4 mm. Does not move, sits on a clam shell.

Sharkbait19 · Jan 27, 2022

I’m pretty sure that’s a limpet

WheatToast · Jan 27, 2022

Sharkbait19 said:
I’m pretty sure that’s a limpet

Not so sure that’s a limpet. I do remember this one type of harmless hitchhiker snail that was immobile and had a long black proboscis, but I just cannot remember the name. @Isopod80 knew about it, but has not been on Reef2Reef in months

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WheatToast · Jan 29, 2022

@Andrey Grodno
@Sharkbait19
Aha! I found it!

Isopod80 said:
Hipponix sp. (hoof snail) These snails are unique in the fact that they are sessile. Once attached to a surface they never move. They just feed on what is in reach with their proboscis. They're completely harmless. They're basically the snail version of a barnacle. Not an overly common hitchiker but when they are found, it's usually attached to the shell of a larger snail like yours.

@Isopod80 never disappoints!

Andrey Grodno · Jan 29, 2022

Yes, that's it. Thank you!

Andrey Grodno · Feb 2, 2022

Another unknown creature. It sits on the shell of a snail. photographed through a microscope, so the video quality is poor.

Rtaylor · Feb 2, 2022

Andrey Grodno said:
Another unknown creature. It sits on the shell of a snail. photographed through a microscope, so the video quality is poor.

Vermatid snail

WheatToast · Feb 2, 2022

Andrey Grodno said:
Another unknown creature. It sits on the shell of a snail. photographed through a microscope, so the video quality is poor.

Looks like a Vermetid snail, another sessile snail that resembles a tube worm. They are generally seen as pests as they can rapidly multiply and produce mucus nets that can irritate coral. An individual Vermetid snail can be killed by crushing its base (with tweezers?).

SVC_117 · Feb 2, 2022

second vermetid

damsels are not mean · Feb 2, 2022

That's definitely a vermetid. Kill it with fire. They are annoying although the panic about them is overblown IMO since they seem to end up in everyone's tanks eventually anyways.