floating fresh purple sea urchin washed ashore in clear water

animal ashore beach beached biology careful class clean clear close creature cuisine dangerous delicacy dollar dollars dry drying echinoderm echinoidea fauna float floating food fresh globular hedgehog hot humid interesting japanese kin knowledge leaves life living looking marine name natural nature not ocean old painful pebbles peculiar phylum pine poke purple resemble sand sandy sea seaside seawater shadow sharp small spines spiny step strange thorny transparent travel tropical uni urchin urchins washed water word