World Heritage Site. Talamanca is also home to three indigenous community reserves, the Cahuita National Park, and a UN-designated wetlands site at the Jairo Mora Sandoval Gandoca-Manzanillo Mixed Wildlife Refuge. In total, 88% of the Talamanca region has some level of environmental protection. Talamanca's marine resources include coral reefs, mangroves, rare manatees, over 100 species of fish, and sea turtle nesting beaches. In fact, Costa Rica's Caribbean coast is a migratory pathway for at least three endangered species of sea turtles, and sea turtles are recognized as being especially susceptible to oil pollution. Protection of the sea turtles is a primary concern for conservationists, but it is likely that mangroves and wetlands, generally, would not be able to recover from an oil spill. Oil pollution would also significantly impact the coastal communities and local economic infrastructure, as it would likely result in hundreds of fishing jobs being lost and a decrease in eco-tourism. Eco-tourism remains Costa Rica's primary source of revenue from other countries. Efforts to halt exploration and drilling by Harken Costa Rica Holdings Background In 1994, the Costa Rican legislature passed a Hydrocarbons Law which divided the country into 27 blocks for oil and natural gas exploration, and it allowed firms of foreign countries to bid for oil concessions. In July 1998, Costa Rican President Miguel Angel Rodriguex (1998–2002) granted one concession of four exploration blocks to MKJ Xploration Inc. (MKJ), a small Louisiana-based company. Located in Talamanca, the four blocks were to be used for the exploration and extraction of hydrocarbons. In November 1998, Harken Energy Corporation (Harkan) of Dallas, Texas, purchased 40% of the concession rights from MKJ, and the two companies combined to create Harken Costa Rica Holdings (HCRH). In March 1999, Costa Rica's National Technical Environmental Secretariat (SETENA) approved an environmental impact study (EIA) submitted by HCRH to conduct marine seismic reflection blasting. Between October and December 1999, HCRH began using seismic reflection blasting to map possible oil reserves. Such blasting was in derogation of a condition in the EIA that restricted blasting to the months of January and July, so as to minimize the impact on marine life. The blasting significantly disrupted the local Costa Rican fishing industry. ADELA formed in December 1999 to oppose the actions of HCRH. Efforts of ADELA In January 2000, ADELA was a party in a lawsuit seeking an injunction and annulment of the HCRH exploration concessions. In