Modifiers matching snail:

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

Simple categories matching intertidal:

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