Possible Clues:

• Divers' equipment in ship going round island
• Visits a school, maybe
• Goes diving
• Takes a dive, perhaps
• Takes a deep dive, maybe
• Dives with tanks
• Takes a dive as German special forces surround location of Guantanamo Bay detention centre
• Ship circling island with diving equipment
• Swims with the fishes, maybe
• Explores with a tank