Stripped tube thing

The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.

Tysob44

Aquarium Advice Activist
Joined
Feb 17, 2013
Messages
153
Ok no idea what this is came on a rock with a bunch of mushrooms and it opens into a tube looking thing and closes when I get near it
 

Attachments

  • image-2558264159.jpg
    image-2558264159.jpg
    162.9 KB · Views: 112
I am not sure when it's open just looks like a hollow tube
 
Back
Top Bottom