what are these red things from Carribean?

[s.s.seafan]

Picture taken from Mexican carribean, is that coral, sponge? what kind?

thanks,

Jason

 

[designbysue]

Tube sponge I believe.

 

[s.s.seafan]

thanks.

any more specific info about this?

 

[Scuba Monkey]

If the sponge has a rough surface (can't really tell from the photo), it might be Ptilocaulis walpersi, which is red to orange, irregularly shaped, and is commonly encrusting (the photo looks like the sponge grew over something, perhaps a portion of that sea fan that's poking out from behind it).