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I live on the coast. On the peninsula called Istra. The ropes are attached to the buoys and clams are growing on the ropes. The ropes under the buoy are covered with clams because this type of clams grows in dense colonies, always attached to various surfaces.

I think I understand and have seen the scallop, it sticks so tightly to all the places it hits the water, and has to use a knife or special tool to pick it up. It is not like that? or am i wrong

Yes, something like that.

oohh ok, Thanks for explaining