underwater view of a tide pool filled with urchins with reflections

coastal ecosystem california covered rocks echinoderms fort bragg infestation intertidal zone marine biodiversity herbivores invertebrates mendocino county ocean life oceanic tidepools pacifc purple sea urchins reflection rocky shore saltwater habitat urchin clusters shallow water pool shells shoreline fauna spiny tidal fluctuations tidepool underwater dcim gpr view tide filled lots uchins covering reflections