Close up shot with shallow depth of field of water steadily flowing across a beach and into a turquoise ocean and eroding the sand as waves slowly crash in the background

tidal rock pool sea nature ocean diversity salt salty intertidal rocks slippery wet atlantic seawater shore rocky intertidal zone saline dynamic handa island scotland motion tide tides ebb and flow current flow erosion eroding flowing gentle sand reflection sandy trickle trickling fluid shallow depth of field seaside seashore crash waves swell turquoise ocean blue water slosh sloshing beach lapping the shore