What is this???

[Chris’s fish]

Can someone help me identify what this is? It has not moved to my knowledge and is about 1 cm. It's hard to see with the pictures, but they are the best I can get. Thank you!

 

[KJ]

Sponge

 

[Chris’s fish]

Sponge

I have dry rock and it survived a freshwater dip? So could a sponge survive that?

 

[KJ]

It is not uncommon for a small sponges to occasionally arise from nowhere on the rock .

 

[KJ]

@Lovemyreef2015

 

[Lovemyreef2015]

I have to agree. It looks like a type of sponge. A piece could of floated in the hole and you just didn't notice it until now. If you touch it does it retract at all? Is it soft or hard feeling?

 

[Chris’s fish]

It retracted back into the hole when I touched it. I didn’t want to touch it with my finger (I used a toothpick) so I don’t know if it’s hard or soft

 

[KJ]

;Bookworm Tunicate?
https://www.google.com/search?rlz=1...ved=0ahUKEwiplcKdtejbAhWE3YMKHYZKDXsQ3VYIJigA

 

[Chris’s fish]

;Bookworm Tunicate?

I don’t think it is. Online pictures don’t match.

 

[Chris’s fish]

What else could it be?

 

[KJ]

@Jose Mayo

 

[reef lover]

Majano??

 

[Jose Mayo]

@Jose Mayo

Under these conditions it is very difficult to make a positive identification. With this size (1.0 cm) and these projections of his body, and having retracted to the touch, could be a tunicate, a nudibranch, a sea cucumber...

The first point will be to observe if he moves or leaves that place, to be able to observe it better.

Regards

 

[Chris’s fish]

Majano??

Maybe

 

[KJ]

Under these conditions it is very difficult to make a positive identification. With this size (1.0 cm) and these projections of his body, and having retracted to the touch, could be a tunicate, a nudibranch, a sea cucumber...

The first point will be to observe if he moves or leaves that place, to be able to observe it better.

Regards

Thank you.

 

[Chris’s fish]

Under these conditions it is very difficult to make a positive identification. With this size (1.0 cm) and these projections of his body, and having retracted to the touch, could be a tunicate, a nudibranch, a sea cucumber...

The first point will be to observe if he moves or leaves that place, to be able to observe it better.

Regards

Whatever it is it has since left it’s spot and disappeared into the rock. If I see it again, I will for sure update with pictures.

I don’t know if this might be connected, but I also have Nudibranch on my montipora cap. They are all really small though.

 

[Jose Mayo]

Whatever it is it has since left it’s spot and disappeared into the rock. If I see it again, I will for sure update with pictures.

I don’t know if this might be connected, but I also have Nudibranch on my montipora cap. They are all really small though.

Nudibranchs usually have species-specific diets ... some enjoy eating corals; it's good to keep them under your eyes!

Regards

 

[Chris’s fish]

Here are some more pictures. It has now extended out, but hasn’t moved.
@Jose Mayo

 

[KJ]

Majano.
https://www.google.com/search?q=maj...ved=0ahUKEwiUlNKe2fTbAhWD3VMKHaseASkQ_AUICigB

 

[Jose Mayo]

Majano anemone

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