A wide stream of water cuts through the sand and rock to return to the ocean, Puerto Peñasco, Gulf of California, Mexico

intertidal beach littoral zone low tide rocky shore foreshore marine biomes mud flats puerto penasco sand flats coastline rock flats marine habitat rocks gulf of california shoreline coast extreme terrain nature reserve sand ridges sand extreme ecosystem environment ecology las conchas scenery lichens ripple crevices ocean wildlife reserve nature solitude relaxation habitat environmental conservation holes stream ecosystems flow mexico rugged biodiversity climate movement fluctuation fragile cracks drastic change title ranges