This is Buds of mangrove trees Carried by the ocean waves connected by the bay. As we all know mangrove trees have a function of settling mud in the roots of mangrove trees so as to prevent the occurrence of intrusion of sea water to the mainland. Erosion is the erosion of the ground surface by the water flow while the abrasion is the erosion of the soil surface due to waves of the ocean waves.
Nikon D3200 (with 18-55mm VR lens)