Modifiers matching snail:

• herbivorous,
• large,
• small,
• terrestrial,
• marine,
• predatory,
• aquatic,
• venomous,
• larger,
• intertidal,

Simple categories matching intertidal:

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