Dry stones
Pumice is a type of stone that is never found in the ocean because it is less dense than water and therefore floats.
Hail stones. Gall stones. The Rolling Stones. Tombstones. Kidney stones.
Any rock can be found in the ocean because of erosion (except dry ones).
Hail stones. Gall stones. The Rolling Stones. Tombstones. Kidney stones.
Hail stones. Gall stones. The Rolling Stones. Tombstones. Kidney stones.
Hail stones. Gall stones. The Rolling Stones. Tombstones. Kidney stones.
a crystal
Salt water
Egyptain and Greek
a organ of a blue whale, all kind of plastic and dead animals
The only answer I can think of is Starfish.
oceanic crust