Related Clues:

• Shell that is fired from an unlikely source!
• What Ralph uses to call a meeting in 'Lord of the Flies'
• It's blown out of the water
• Sea shell sometimes used as a wind instrument
• Sea-shell whose plural can be spelt with an unexpectedly missing 'e'
• Triton’s horn
• Marine shell
• Makeshift trumpet
• Mollusc caught once mostly by the end of beach
• Caribbean gastropod
• Tropical seashell