Photo via San Francisco Ocean Film Festival

Isla Holbox is a small island off the coast of Mexico that boasts an unusually large whale shark population. The nutrient-rich waters are a perfect feeding ground for the largest fish in the ocean. Whale sharks congregate here by the hundreds, but that means tourists are now flocking here by the thousands. It’s a wonderful possibility for habitat and species conservation since the whale sharks are worth more alive than dead. But what does all that eco-tourism do to the local area? Is it … Read the full story on TreeHugger