Unknown mollusc

Salty87 · Jul 20, 2022

Got this little thing on some liverock that came along with some feather caulerpa I ordered. It is a perfect sphere when the lights are on or disturbed. Suctions to the glass floor. Eats detritus and algae as far as I ve observed. The images show it when it is active in the dark. The gelatinous body extended.
Any help I'ding this critter is appreciated.
Apologies for the image quality. New to all this.

Goaway · Jul 20, 2022

No idea. If you can get a closer/clear pic, that would be extra helpful. Otherwise, from your observations. Enjoy watching the critter. They make my reef life feel complete.

Do you have live rock and place of collection may help guess id.

Salty87 · Jul 20, 2022

Mibu said:
No idea. If you can get a closer/clear pic, that would be extra helpful. Otherwise, from your observations. Enjoy watching the critter. They make my reef life feel complete.

Do you have live rock and place of collection may help guess id.

Oh I'm getting back into the hobby after a little more than a decade and watching even the tiniest thing is super interesting to me.

This came on a couple pieces of small live rock that the macro algae is attached to. I bought the macro for a refugium. My guess would be that the live rock are harvested locally (Indian ocean), probably off the southern coasts.

Salty87 · Jul 20, 2022

Mibu said:
No idea. If you can get a closer/clear pic, that would be extra helpful. Otherwise, from your observations. Enjoy watching the critter. They make my reef life feel complete.

Do you have live rock and place of collection may help guess id.

Here's as close as I can get without it getting more blurry. Hope it helps. Thanks for trying.

Goaway · Jul 20, 2022

Does it have limbs? Could be a gull crab if it does.

Gall crab...

Salty87 · Jul 20, 2022

Mibu said:
Does it have limbs? Could be a gull crab if it does.

Nope. No limbs. No antennae like a stomatella either. It is about 5-6 mm total length. The body actually looks sorta like a pineapple sponge. But it moves when the jelly body comes out. It is perfectly spherical like a micro urchin when disturbed.

Goaway · Jul 20, 2022

Salty87 said:
Nope. No limbs. No antennae like a stomatella either. It is about 5-6 mm total length. The body actually looks sorta like a pineapple sponge. But it moves when the jelly body comes out. It is perfectly spherical like a micro urchin when disturbed.

Puzzling to me. I've never had the fortune to see one of such description.

Goaway · Jul 20, 2022

Unless its a type of fleshy limpet, bubble snail..

Salty87 · Jul 20, 2022

Mibu said:
Unless its a type of fleshy limpet, bubble snail..

Nope. Not them either. Still Google searching for anything as even remotely close to this thing. Thanks for the effort though.

Goaway · Jul 20, 2022

Np. Gl on the id. Cute little critter.

Salty87 · Jul 20, 2022

Mibu said:
Np. Gl on the id. Cute little critter.

A couple more of the absolute best pictures I could manage with my other phone camera. Almost touching the water lol. Thanks again.

Salty87 · Aug 29, 2022

Well this is what the above thing has grown into. Still no clue what it is.

Salty87 · Aug 29, 2022

@Mibu... Does this thing still look cute? I'm having nightmares...

ISpeakForTheSeas · Aug 29, 2022

Maybe a juvenile sea cucumber like a medusa worm or something? I'm not sure. It's cool though. My vote is to keep growing it out and see what it turns into.

Salty87 · Aug 29, 2022

ISpeakForTheSeas said:
Maybe a juvenile sea cucumber like a medusa worm or something? I'm not sure. It's cool though. My vote is to keep growing it out and see what it turns into.

That was my initial thought as well, a juvie sea cuc... It is in a standalone refugium that was cross contaminated with ich and running fallow almost 45 days.

Goaway · Aug 29, 2022

Salty87 said:
@Mibu... Does this thing still look cute? I'm having nightmares...

Yes, very cute. It could be as posted here.

ISpeakForTheSeas said:
Maybe a juvenile sea cucumber like a medusa worm or something? I'm not sure. It's cool though. My vote is to keep growing it out and see what it turns into.

Just awesome!