<p>Volcanic remnant wreathed by coral reefs, the island of Bora-Bora rises from the Pacific Ocean. "The lagoon of Bora-Bora, with its incredibly blue water and the stunning backdrop of the island itself, is almost impossible to capture from sea level," notes photographer Bob Krist. "The best way to show the island in relationship to the surrounding water is from the air. Though aerial photography presents challenges—a constantly moving platform, vibrations from the aircraft, and tricky exposure situations—the results are always worth the effort."</p>