Related Clues:

• Kwajalein is one
• Bikini in the Central Pacific
• Polynesian island
• South Pacific spot
• Coral ring
• Coral structure
• Beach locale
• Lagoon enclosure
• Ringlike coral reef
• Christmas Island, for one
• Coral isle
• Island surrounding a lagoon
• Lagoon border
• Doughnut shape
• Reef in a ring