Modifiers matching mollusc:

• open,
• terrestrial,
• edible,
• bivalve,
• intertidal,
• female,
• mobile,
• marine,
• important,
• familiar,
• rare,
• large,
• larger,
• sessile,
• benthic,
• small,
• abundant,
• predatory,
• aquatic,
• common,

Simple categories matching intertidal:

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