Weirdness

[teedub68]

Hey there reefing community! Hope all is well and ‘25 is starting out great. Have a quickie ID question. Thanks in advance for any help. Have a nuvo 40 pro. Haven’t cleaned the filter chamber in a minute. These weird critters are growing back there. But not in the main tank ….
Can anyone give me hand with identification? Never seen these before. Water perams are all good. Basically an anemone tank.

 

[Crabs McJones]

Sporibid worms and pineapple Sponges. Filter feeders