Horseshoe clam (Hippopus hippopus) on sandy bottom, Rongelap, Marshall Islands, Pacific

invertebrates horseshoe clam hippopus hippopus marshall islands north pacific eye pacific ocean bivalve clam invertebrate mollusc mollusca one animal day outdoors nature natural world marine life underwater clams shell shells horseshoe clams pacific sandy close up close ups rongelap detail details abstracts patterns eyes horizontal