Help ID Live Rock Hitchhikers

[Rtaylor]

Oculina sp. coral

 

[ying yang]

Are these stationary or do they move ?
To me sort off looks like 2 x sea slugs/nudis
Can sort of make out 2 bodies and what I outlined red looks like the 2 stalk eye things.
If it is a sea slug/nudi,usually they have a very specific diet and only eat one thing or if soft corals then can eat a few.
Only a guess and could be way off.
If move could even be flatworms.
Shape reminds me off something similar in shape to sea slug I shared but yours looks semi translucent with white patterns

 

[OldRed1]

Are these stationary or do they move ?
To me sort off looks like 2 x sea slugs/nudis
Can sort of make out 2 bodies and what I outlined red looks like the 2 stalk eye things.
If it is a sea slug/nudi,usually they have a very specific diet and only eat one thing or if soft corals then can eat a few.
Only a guess and could be way off.
If move could even be flatworms.
Shape reminds me off something similar in shape to sea slug I shared but yours looks semi translucent with white patterns

Great question! No, they have not moved. Unfortunately, there is not a way to get a better photo of them because of how they are positioned.

 

[OldRed1]

I made a quick video of them in case that helps in the identification. This video was taken under 100% white light.

 

[encrustingacro]

Oculina sp. coral

That one looks more like a cladocora. Oculinas are more plocoid, while cladocoras are more phaceloid. However, I do not know if cladocora occurs in the Caribbean/gulf of Mexico.

 

[ying yang]

I made a quick video of them in case that helps in the identification. This video was taken under 100% white light.

Yeah video much more clearer ,another guess is some kind off eggs ?
But don't know so will bow out ha ha
Hopefully someone can id what they are from video.

It's cool finding all tje hitch hikers/micro fauna hey,I love looking at night at tank when all critters become active ^_^

 

[OldRed1]

Yeah video much more clearer ,another guess is some kind off eggs ?
But don't know so will bow out ha ha
Hopefully someone can id what they are from video.

It's cool finding all tje hitch hikers/micro fauna hey,I love looking at night at tank when all critters become active ^_^

It is so cool! Cannot wait till we get more critters in the tank.

 

[LiverockRocks Verified Sponsor]

Great question! No, they have not moved. Unfortunately, there is not a way to get a better photo of them because of how they are positioned.

Here is a quick id from J.

1. We have yet to identify, crazy bivalve. Other ones we see seem to have a shell that looks like the rock.
2. Caulerpa variety maybe ashmeadii
3. Possibly blushing star coral (needs low light). It will color up.
4. Lancet (friendly hitchhiker)
5. I thought colonial tunicate, but now see it is floating. Can't id from photo.
6. tube coral
7. nudi. Can't id from photo.
8. Lancet

 

[OldRed1]

Here is a quick id from J.

1. We have yet to identify, crazy bivalve. Other ones we see seem to have a shell that looks like the rock.
2. Caulerpa variety maybe ashmeadii
3. Possibly blushing star coral (needs low light). It will color up.
4. Lancet (friendly hitchhiker)
5. I thought colonial tunicate, but now see it is floating. Can't id from photo.
6. tube coral
7. nudi. Can't id from photo.
8. Lancet

Thank you for the great info! If you have a moment to watch, here’s a very short video of the critter in number 5.

 

[WheatToast]

1. Looks like a filter-feeding tunicate:

2. Might also be Caulerpa sertularioides:

5. Looked like dove snail eggs until seeing how sheet-like they were in the video.