Understand
The island was originally established as a refuge in the 1960's to protect large game animals from the dangers of poaching and overhunting that they were facing on the mainland. The mexican marines who had bases on the island prevented the Seri indians from landing or hunting on the island despite the fact that the island had always been Seri territory. By the 70's this changed and the rights of the Seri were recognized. Today, the indians don't hunt on the islands instead permits are auctioned off to wealthy Americans and the proceeds are split. Half is allocated to the Seri, the remainder is used to finance conservation efforts. If you are interested in hunting save your pesos, permits typically sell for ~$75,000USD!!
Landscape
The coastline is a combination of sandy beach, gravel shore and low cliffs. There are many secluded coves on the island. The interior of the island is mostly mountainous the Sierra Menor. Low resolution topographic maps are available topo lines drawn at 100m increments.
History
Originally populated by the Seri Indian tribe, they have since been relocated to the mainland. Today only about 2000 Seri survive in a small village, Punta Chueca about 20 miles north of Bahia Kino.
Climate
A desert climate. The island is part of the Sonoran desert. Winter temperatures are nearly ideal, while summer can be deadly. Strong winter winds can be a concern in December and January. Late winter to early spring is probably the ideal time of year to visit.
Get in This is the hard part, you must first obtain a permit then arrange a boat across the straits of hell from mainland Sonora. The straits are aptly named and 10 foot waves and strong winds are not uncommon. Be sure to hire a sea worthy fishing boat for the crossing. The crossing takes about 5 hours in rough seas, considerably less when waters are calm.
Flora and fauna
Many birds nest on Isla Tiburon in the spring of the year. While it is possible to visit during nesting season please be especially careful to avoid disrupting the birds.