Hard to say, might be corals, or eventually sponges. Do you have another pics?
hello,
this is coral, but need sharper image for proper identification. what was the depth, as it look like more flat than branched.
The pic are cnidarian and they are:
Phylum Cnidaria
Subphylum Anthozoaria
Class Anthozoa
Subclass Hexacorallia (=Zoantharia)
Order Zoantharia
This last has a basal coenenchyma and a body with tentacles around of a mouth.
No scale in the photo, that makes difficult to concrete. Could it be an encrusting sponge or, if the pillars are small (i.e., mm) an encrusting alga like Lithothamnion or similar. In any case, some encrusting organism is covering the digits or pillars.
Corals of unidentified sp. are more likely I think... other extremely less likely option would be sponges...
1°/ No scale on the picture ; no depth given. no environment description.
2°/ I agree it looks like a dead branch colony of a hard coral. A bout genus nothing can be point out ; too speculative !
Based on the dead? structure at the top of the columns I would also say this is a colony of scleractinian coral, be it in very bad shape. Maybe a columnar Coscinaraea, but I agree with Bernard Thomassin we need a detailed photo with scale to be more certain about an ID.
Hi, it looks like a coral with some coralline algae at the base. some extra (green) algae around. Unfortunatelly the zoom does not allow to see detail as to identify which coral. Have a look at visual identification guide for your area, you will find the coral.
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