Hitchhiker ID

[Crowned_Sock]

Never seen it before, never knew it was here until I flipped my Xenia, they look like fuzzy white tubes with holes on the end

 

[EnterName]

Never seen it before, never knew it was here until I flipped my Xenia, they look like fuzzy white tubes with holes on the end

I assume you have found some sponges, probably pineapple sponges. It's hard to tell with blue light and outside of water though.

Take a look at post #82 and especially #83 of my microscopy thread (page 5, 2nd and 3rd post): https://www.reef2reef.com/threads/microscopy-thread.1138845/post-14426492