Related Clues:

• Reef setting
• Mariner's milieu
• See 38-Down
• Horse or dog lead-in
• Ross, e.g.
• Breeze source
• Great expanse
• Columbus' venue
• Word with horse or lion
• Salton or Sargasso
• Winslow Homer subject
• Briny deep
• Something fishy?
• Sailing setting
• Humpback's home