Puerto Rico Bioluminescent Bay

November 19, 2013 - 3:05 PM
FILE - This April 1, 2005 file photo shows the Fajardo Grand Lagoon at the Nature Reserve of Las Cabezas de San Juan at dawn, about 35 miles east of San Juan, Puerto Rico. Biologists in Puerto Rico are investigating why the bioluminescent bay off the northeast coast, has gone nearly dark. According to Department of Natural Resources, scientists were traveling to the coastal city of Fajardo on Tuesday, Nov. 19, 2013, to investigate the problem. (AP Photo/Herminio Rodriguez, File)