OBAMA'S PIVOT ONTO A PACIFIC CORAL REEF

Tubbataha Reef off the southern Philippines is home to some of the richest marine life on the planet. It's much deserving of its world heritage site status. But it's now under serious threat since a US Navy minesweeper ran aground on a coral wall on January 17th. Al Jazeera's Jamela Alindogan reports from Palawan.