Related Clues:

• Sea shell sometimes used as a wind instrument
• Certain gastropod
• Aquarium gastropod
• Animal with small spike
• Sea-shell whose plural can be spelt with an unexpectedly missing 'e'
• Garden slowpoke
• Creeping critter
• Mollusk with a spiral shell
• Creature that leaves a slimy trail
• Brian in The Magic Roundabout
• One in no hurry to whizz round north
• Triton’s horn
• Marine shell
• Mollusk in a garden
• One leaving a trail