All were aboard transported off ship that struck Tubbataha Reef in the Sulu Sea , U.S. Navy said . Initial efforts to save the ship at high tide were unsuccessful . Tubbataha Reefs Natural Park is home to threatened and endangered marine life . The cause of the grounding was under investigation , Navy said .
All 79 aboard transported off ship that struck Tubbataha Reef in the Sulu Sea , U.S. Navy says . Initial efforts to free the ship at high tide were unsuccessful . Tubbataha Reefs Natural Park is home to threatened and endangered marine species . The cause of the grounding was under investigation , Navy says .