sand goby at the shoreline

sand goby shoreline fish marine life underwater habitat coastal sandy bottom camouflage small colorful burrow feeding behavior aquatic biodiversity ecosystem intertidal zone tide rocky outcrops tide pools marine species marine environment shallow water sand dunes hidden nature ocean floor seafloor shoal sandy beach invertebrates algae seagrass tide fluctuations fish behavior oceanic tide movement sandy substrate sea creatures underwater footage aquatic environment underwater world fish species coastal ecology underwater ecosystem coastal biodiversity marine habitat waves