Emergency workers on the Caribbean island of Tobago are struggling to clean up an oil spill from an abandoned vessel. The spill has affected 15 kilometers of coastline and damaged a reef, posing a threat to the island’s fish and food supply. Authorities may declare a national emergency. The vessel, identified as the Gulfstream, was found capsized and abandoned, and officials have been unable to locate registration information. The spill comes at the beginning of Tobago’s Carnival season, a major tourist attraction.