What are these slug looking critters...

[RudeDawg]

Hello,
Found these critters all over my return pump. What are they?

 

[Derrick0580]

Pineapple sponges, harmless filter feeders

 

[RudeDawg]

Pineapple sponges, harmless filter feeders

Thank you for the reply. Are the thin tentacles, or tendrils part of the sponge?

 

[Derrick0580]

Nah, just another random sponge/filter feeder.

 

[EeyoreIsMySpiritAnimal]

Thank you for the reply. Are the thin tentacles, or tendrils part of the sponge?

What is that!! A R2R guide to common new tank hitchhikers.

One of the greatest things about starting a reef tank is getting your live rock in and admiring all the diversity within it. The rock comes to life different creatures. This is a guide that I, along with a very well known critter identifier @KJ , have put together for the new reefer on what...

www.reef2reef.com