I would try and sharpen it and reduce the noise. gl

Yep, image is slightly blurry.

looks like dropped grapes.

Thanks friiskiwi for comment. I don't think it was grapes, it's size was less than 1 Sm in diameter.

Strange, could it be some kind of seaweed? Great detail.

nice shot. There is such a thing as seaweed grapes, but I dont know the exact name.
Good luck

Friiskiwi, I thought so too, that it was some kind of seaweed.
Thank you for comment cabldawg71, you cleared our doubts.

Those aren't seagrapes. They are much larger. It looks like a piece of Sargasso Weed with the leaves broken off. They are that color and have small grape-like "berries" on them.

Thank you kyricom, Honestly I didn't know that Sargasso weed is present in Mediterranean, I thought it was only somewhere near Australia.

I grew up on an island off the coast of Florida, and we got it all the time. I think it's found all over, just named after the Sargasso Sea

Wow, kyricom, thank you for info, now it would be interesting to see how it's growing.

sorry, this will be removed shortly due to an accidental dbl post

It looks like they went with the other for removal instead.

gud luck to u...........

Indeed, broken... just not too keen about the joint in the tiles...

sorry about the join in the tiles, but I didn't choose to break the tile there.

lol... I figured... but it kind of breaks the composition... sorry...

fully on theme great shot !