Related Clues:

• Archipelago member
• Castaway's refuge
• Shipping stop
• Ely, e.g.
• Capri or Wight
• Avalon, for one
• "Survivor" locale, maybe
• It's surrounded by beaches
• Emerald, for one
• Chain part
• What's left at sea
• Gilligan's home
• Maroon's locale, perhaps
• 12-Across, for one
• Spot on the map