Related Clues:

• Last word of 'America the Beautiful'
• Mermaid's realm
• Marmora, for one
• Aegean --
• Horse preceder
• ____Horse
• "Titanic" setting
• "Finding Nemo" setting
• Salt water
• Salty expanse
• It's certainly fishy
• "America the Beautiful" closer
• Davy Jones' domain
• Briny waters
• The Caribbean, for one