Are these all sponges?

[DD0513]

Are these all just types of sponges? Including the yellow, slime looking organism on the rock? Got this piece of live rock today and love all of the organisms, just not sure what they are.

Thanks for the help!

 

[Tinnerito]

Was there supposed to be a photo attatched?

 

[DD0513]

Was there supposed to be a photo attatched?

Yea, sorry

 

[droblack]

I see vermetid snails

 

[DD0513]

I see vermetid snails

Are they bad for the tank? Or just an eyesore?

 

[Tinnerito]

Are they bad for the tank? Or just an eyesore?

Individually, no. But they reproduce quickly, and when theres a lot of them, not only do they compete against corals for calcium, they're very hard to get rid of as for their tough calcium carbonate shells. So although they alone are not harmful, you should remove them before its too severe.

 

[DD0513]

A couple videos of the rock, just wondering what everyone sees, especially big white tubes and yellow substance?

 

[DD0513]

A couple videos of the rock, just wondering what everyone sees, especially big white tubes and yellow substance?

Might have to hold down on the video and download it to view, it didn’t post right, but they are downloadable

 

[ISpeakForTheSeas]

A couple videos of the rock, just wondering what everyone sees, especially big white tubes and yellow substance?

The yellow and white are sponges, yes - they're most likely harmless.