Mountainous Isla del Tiburón, Mexico's largest island, was once a Seri homeland, but it was depopulated when the island was declared a nature reserve in 1963. Today it's administered by the Seri tribal authorities. An intact desert ecosystem, Tiburón is home to bighorn sheep and large colonies of sea birds. There's good snorkeling around its coast. You need a permit to visit the island – speak to guides Alfredo López or Ernesto Molina in Punta Chueca who can set up tours.
