Aerial a low tide exposed sand bar attracts seabirds, Rocky Point, Puerto Peñasco, Gulf of California, Mexico

aerial drone tide low tide sand bar intertidal beach seabirds seagulls waves surf ocean rocky point puerto penasco gulf of california mexico pelicans plover sandpiper marine environment feeding niches colonies saltwater web feet waterproof plumage black white grey surface feeders commonly seen fearless animals sand flats mud flats sand ridges rock flats foreshore habitat littoral zone rocky shore marine biomes ecology extreme ecosystem drastic change holes cracks crevices biodiversity