Related Clues:

• Salmon holds up message, the French for seafood
• Plant; mollusc
• Carnivorous mollusc
• Shellfish's only rating, to begin with
• Seafood favoured by Arabella Allen
• Blue gastropod
• Sailor, with no one else present, produces seafood
• Evergreen creeper that may be found on the seashore
• Small marine snail
• Mollusc with pointed shell
• Sea-dweller — the Ancient Mariner, say, after throw of Death's dice?
• Shellfish sailor wanted ahead of sole
• Edible mollusc — on a bale (anag)
• Single sailor gets seafood
• Shellfish — one consumed by a friend of Pickwick