Related Clues:

• American lab returned single snail
• Large edible marine gastropod
• Sailor marooned finds snail
• Who's at sea with a single source of nutrition?
• Sea otter's snack
• Mollusk with a nacreous shell
• Mollusc known in South African as perlemoen
• Sea otter prey
• Sailor, solitary, will find shellfish
• Seafood (and nothing else) sustains sailor
• Edible shellfish, source of mother-of-pearl
• Shellfish muscle unique
• Head removed from bygone sea creature
• Female leaves old seafood in the Channel Islands
• Edible mollusc men found by sea abroad