Simple categories matching intertidal:

• invertebrate,
• creature,
• species,
• organism,
• mollusk,
• shellfish,
• fauna,
• system,
• snail,
• gastropod,
• arthropod,
• animal,
• structure,
• mollusc,
• prey,
• bivalve,
• herbivore,

Members with property intertidal:

• echinoderm,
• urchin,
• mussel,
• predatory_gastropod,
• limpet,
• crab,
• oyster,
• bivalve_mollusc,
• crabs,
• abalone_haliotis,
• several_type,
• gastropod_mollusc,
• whelk,
• snail,
• shrimp,
• aquatic_insect,
• canoe_run,
• slipway,
• shellfish,
• algae,
• springtail,
• bivalve,
• california_mussel,
• various_worm,
• gastropod,
• abalone,
• herbivorous_snail,
• mite,
• clams,
• arthropod,
• mud_snail,
• barnacle,
• anemone,
• shore_crabs,
• copepod,
• cockle,
• adult,
• crustacean,
• mangrove_forest,
• coral,
• chiton,
• periwinkle,
• jetty,
• amphipod,
• gastropod_snail,
• starfish,
• worm,
• moon_snail,
• fish_weir,
• mollusc,
• larva,
• fish,
• turban_snail,