Please ID - long stems with a white umbrellas on top

[>>klong<<]

Anyone have any ideas of what these things are?

 

[Wasabiroot]

Unless it's a coral I'm not familiar with, that appears to be Umbrella algae. Pretty cool if that's a hitchhiker.
https://en.m.wikipedia.org/wiki/Acetabularia

 

[>>klong<<]

18 months in, and I'm still finding cool stuff on the KP live rock that I bought. Too bad the tank doesn't look any better. Along with cool umbrella algae, I have just a about every other kind of algae, too.

 

[Chrisanthellae]

Searched Google for "reef tank umbrella hitchhiker" trying to ID this thing and found this thread. What a lucky search term lol. Here's a pic of mine:

It's actually kinda pretty!

 

[cpoynter]

Looks like mermaid’s wineglass