Related Clues:

• Water hazard
• Snorkeler's haunt
• Offshore hazard
• Part of a sail
• Floating lettuce?
• Snorkeling site
• Marine formation
• Snorkeling locale
• Coral construction
• Salad choice
• Natural breakwater
• Hard-to-get-to-know person, so to speak
• Romaine alternative
• Sloop hazard
• Coral creation