What is this stuff?

[mbublitz01]

found something interesting in my tank covering a lot of the rocks in lower light areas. What the heck are these? looks like they almost have mouths too?

Thanks in advance.

[mbublitz01]

maybe a better picture here

[mcgyvr]

Sponges
(common and harmless)

I'd suggest bookmarking and browsing this site to learn a bit about whats commonly found in our tanks..
https://www.lionfishlair.com/hitchhikers-guide/
It has a simple thumbs up/down rating system to easily let you know about them..

[mbublitz01]

I saw this link in another thread. took a look through it but didn't find anything that looked close to what I see here. thanks for the information. ill take a look though it again.

[mcgyvr]

Originally Posted by mbublitz01

I saw this link in another thread. took a look through it but didn't find anything that looked close to what I see here. thanks for the information. ill take a look though it again.

That link doesn't have much as far as sponges go.. There are thousands of different kinds in all shapes/sizes..
What I see there is certainly a sponge and likely other things like spirorbid worms

[sixty_reefer]

Sponge/tunicate


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