Related Clues:

• Whale's home
• North or South China
• Liner's milieu
• Baltic --
• Great Barrier --
• Ship's nemesis
• 49 Across' venue
• Dolphin home
• One of seven in the world
• Word with horse or bass
• Vast amount
• One of the seven
• Where skates glide
• Swell place
• Breeze source, perhaps