ID stuff on rock

[kaspm]

It's a little hard to see in the picture, however tonight a noticed a couple spots on one rock where there is something growing for it. It's a long white tube with pink stringy looking flower. Any ideas what this is? Thanks

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[AZBigJohn]

Probably a small fan worm or feather duster. Simple filter feeder, nothing to worry about.

 

[enthejungle]

Looks like a feather duster to me.