Related Clues:

• Men on board have right to eat seafood
• Round river, two men go for crustacean
• Piece of seafood: two men eating a third, shortly
• Seafood right for two men to eat
• Two chess pieces combine to capture rook and make a meal of it
• Large shrimp-like edible crustacean
• Seafood recipe initially welcomed by couple on board
• Family doctor was quick to confiscate wife's seafood
• Food found by two men on board round back of larder
• Family doctor hurried outside with Pacific resident