Venezuela is home to the world's highest waterfall, Angel Falls and the second longest river in South America, the Orinoco. It also has the longest coastline to the Caribbean Sea. Venezuela is the world's fifth-largest oil exporter and also has vast untapped reserves of natural gas. Ecologically, Venezuela is considered among the 20 Megadiverse countries of the planet; more than 40% of its national territory is covered by protected areas.