Hitchhikers.. Can someone help ID?

[reefmaster89]

Just picked up some more live rock and this one came loaded with hitchhikers. Would love to know what your thoughts are for ID'ing these. I'm fairly certain the white sponge is a pineapple sponge, but the fuzzy yellow thing next to it is throwing me off. Also, is that a Palythoa or? Aptasia, Hydroids, or something else? Any help would be greatly appreciated.

 

[redfishbluefish]

@ISpeakForTheSeas

 

[ISpeakForTheSeas]

This one looks like a paly to me - I'm not big on zoantharians personally, but maybe a Cinnamon Paly of some kind.

This pic is rough to work with, but I would guess "pest" anemones of some kind (so "Aiptasia").

So, the big pinkish thing on the left here is definitely a sponge (not a pineapple sponge, which comes from the genus Sycon); the fuzzy thing on the right is probably another sponge, but I can't say for sure from the pic. If you have a microscope, you can take a tiny scraping and check under the microscope for spicules. Otherwise, I'd need clearer pics to say for sure what you've got there.

 

[ChiCity]

these look like hydroids to me…

(could just as easily be yellow parazoanthus)

 

[ISpeakForTheSeas]

these look like hydroids to me…

(could just as easily be yellow parazoanthus)

They definitely could be - my guess mostly from the little one on the left, but looking at it, it may be different than the others or just at a strange angle in the pic.

Either way, these probably aren't keepers.