A man wearing a skull mask rides his bicycle as he carries a giant banner, reading "Ecotourists and a signal SOS ", at the main Zocalo square in Mexico City April 22, 2012. REUTERS/Henry Romero (MEXICO - Tags: SOCIETY)

TO GO WITH FEATURE ENVIRONMENT SAFRICA - Two white rhino's graze in South Africa's Thanda Game Reserve in this picture taken January 17, 2004. A drought gripping much of South Africa may send the price of key crops such as maize soaring but game farmers are expected to get less for their wild animals. Much of South Africa's wildlife has become a commodity as former cattle ranchers and other operators grab a slice of the booming ecotourist and hunting industries. REUTERS/stringer

FOR RELEASE WITH STORY CENTAM-ECOTOURISM - Antonio Rodriguez tends plants at an orchid nursey at the Gamboa Rainforest Resort. The $30-million hotel and jungle resort complex, located in 340 acres (138 hectares) of rainforest overlooking the headwaters of the Panama Canal, offers affluent visitors ecologically oriented educational and adventure packages. Central America, which occupies just 0.5 percent of the earth's landmass and houses around seven percent of the world's flora and fauna, is a favoured destination for ecotourists. PANAMA OUT.

AL/MMR

FOR RELEASE WITH STORY BC - CENTAM-ECOTOURISM. Tourists take a ride in pedalo at the Gamboa Rainforest Resort July 30. The 30-million hotel and jungle resort complex, located in 340 acres (138 hectares) of rainforest overlooking the headwaters of the Panama Canal, offers affluent visitors ecologically oriented educational and adventure - packages. Central America, which occupies just 0.5 percent of the earth's landmass and houses around seven percent of the world's flora and fauna, is a favoured destination for ecotourists. PANAMA OUT.

AL/MMR

FOR RELEASE WITH STORY BC - CENTAM-ECOTOURISM - Tourists take an areal tram ride at the Gamboa Rainforest Resort. The 30-million hotel and jungle resort complex, located in 340 acres (138 hectares) of rainforest overlooking the headwaters of the Panama Canal, offers affluent visitors ecologically oriented educational and adventure - packages. Central America, which occupies just 0.5 percent of the earth's landmass and houses around seven percent of the world's flora and fauna, is a favoured destination for ecotourists. PANAMA OUT.

AL/MMR

Antonio Rodriguez tends plants at an orchid nursey at the Gamboa Rainforest Resort. The $30-million hotel and jungle resort complex, located in 340 acres (138 hectares) of rainforest overlooking the headwaters of the Panama Canal, offers affluent visitors ecologically oriented educational and adventure packages. Central America, which occupies just 0.5 percent of the earth's landmass and houses around seven percent of the world's flora and fauna, is a favoured destnation for ecotourists. PANAMA OUT.

Tourists take a ride in pedalo at the Gamboa Rainforest Resort July 30. The 30-million hotel and jungle resort complex, located in 340 acres (138 hectares) of rainforest overlooking the headwaters of the Panama Canal, offers affluent visitors ecologically oriented educational and adventure - packages. Central America, which occupies just 0.5 percent of the earth's landmass and houses around seven percent of the world's flora and fauna, is a favoured destnation for ecotourists. PANAMA OUT.

Tourists take an areal tram ride at the Gamboa Rainforest Resort. The 30-million hotel and jungle resort complex, located in 340 acres (138 hectares) of rainforest overlooking the headwaters of the Panama Canal, offers affluent visitors ecologically oriented educational and adventure - packages. Central America, which occupies just 0.5 percent of the earth's landmass and houses around seven percent of the world's flora and fauna, is a favoured destnation for ecotourists. PANAMA OUT.