Please see the photo. From tropical rocky intertidal habitat. Width of the image is around 60 cm
If you want a correct identiication, post the image on
http://doris.ffessm.fr/
I agree with Vinicus. I'm fairly certain that this is a species of Zoanthus (soft coral), likely a Violet zoanthid (Zoanthus sansibaricus).
Looks like a mat zoanthid. Zoanthus pulchellus or similar - knowing the region or ocean basin would be helpful for a proper ID!
Just out of curiosity: have conducted a google image search? I was just wondering how good an image search would be for identifying/ finding species.
Inka, I tried google's "search by image" to search for visually similar images, and uploaded the image at various crops. Uncropped one yield images of brown algae like Fucus; while cropped one zoomed to the organism yielded plants of similar color! So search by image is quite useless for species identification, but ResearchGate is, and thanks a million Vinicius and others! It seems like a species of Zoanthus.
It's hard to tell from the picture, but they could also be sea anemones.
Certainly a Cnidarian... However through a photo and that resolution is very difficult to identify the species...
Yes, it is a clonally reproducing anemone like those common on wave exposed shores of Tatosh Island USA that Ken Sebans worked on in the late 70s.
Cnidarian. I agree with Mr. Jérôme Mallefet. I also found the similar species at our coastline.
Yes. This anemone is in its contracted state. I think it is this species:
https://www.youtube.com/watch?v=sUYK9nlJ4kI
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