A flock of birds takes off from an exposed intertidal beach, Puerto Peñasco, Rocky Point, Gulf of California, Mexico

cholla bay puerto penasco pelicans low tide bahia la choyas tidal pools intertidal beach foreshore sand flats rocky point mud flats flocks of birds gulf of california seagulls seabirds beach littoral zone coastal feature laguna del mar rock flats marine biomes nature reserve rocky shore tide ebb sand sand ridges waves mexico extreme ecosystem surf ecology drone exploration eroded extreme terrain aerial habitat biodiversity reflective moving splashing environmental conservation fly off motion fluctuation drastic change exposed