Islas de la Bahía ("Bay Islands") is one of the 18 departments into which the Central American nation of Honduras is divided. The islands boast splendid beaches and unspoilt coral reefs, making them a haven for scuba divers and vacationers. The departmental capital is Roatán. Each of the three main islands has a distinct character. Utila is flat, a backpacker paradise, and ringed by spectacular coral reefs. Scuba divers flock to the island, as it is one of the cheapest places on Earth to be PADI certified, and the magnificent yet gentle whale shark swims in the waters off the island. Roatán, the largest island, has a mountainous backbone and splendid beaches and resorts that attract tourists from all over the world. Guanaja, hit hard by Hurricane Mitch in 1998, is covered with Caribbean pine trees and remains relatively undeveloped. Guanaja, visited by Christopher Columbus in 1502, was also a hideout for 17th-century buccaneers, who grew rich by attacking gold-laden Spanish galleons. Regular airline and ferry services link the islands with the city of La Ceiba, on the mainland.