boulders were exposed at low tide in the ocean.

vegetation madagascar wilderness structure formation boulders tanikeli exposed layered geology nature ocean rocks green coast cliff plant tide lush nosy rock tree low tidal coastal area exposed tide cliffs formation layered seabed rock stones clam seaside geological layers molluscs clams mollusk structure coast island geologic greenery shoreline picturesque rocky tanikely coastal rocky rocks tropic shell mollusc boulders shore stone tidal cycle seashore coastline littoral lush nosy madagascar vegetation green tropical