Why Tiburón Island
Isla del Tiburón, or Tiburón Island, holds the distinction of being the largest island in both the Gulf of California and the nation of Mexico, encompassing an area of 1,201 square kilometers (464 square miles). Situated along the eastern side of the gulf within the Mexican state of Sonora and the Hermosillo Municipality, it forms part of the archipelago known as the Midriff Islands, lying opposite Isla Ángel de la Guarda. The physical landscape of the island features a prominent mountain system of volcanic origin.
Historically, the island represents part of the traditional territory of the Seri people, who have inhabited the area for centuries. Long considered isolated and challenging to reach, the northern district near Tecomate hosted a small resort camp during the 1960s and early 1970s featuring buildings, a dock, and an airstrip. Mexican President Adolfo López Mateos designated the island a nature reserve in 1963, and official communal property titles were granted to the Seri tribe in 1975. Apart from military outposts situated along the southern and eastern shorelines, the land remains permanently uninhabited.
Today, the island functions as an ecological preserve under the combined administration of the Seri tribal government and Mexican federal agencies. The environment supports endemic fauna, including distinct local subspecies of both mule deer and coyote. Additionally, bighorn sheep were introduced to the landscape in the 1980s, with limited hunting activity regulated by tribal and federal oversight.
To reach the island, travelers typically journey across the Canal del Infiernillo, a body of water named for its challenging navigation caused by strong tidal currents and shallow shoals. The primary point of access is Punta Chueca, a local Seri settlement situated three kilometers across the channel from Punta Tormenta on the island. Boat transfers can also be arranged from Bahía de Kino, located 34 kilometers (21 miles) to the south.
Visitors planning day hikes or overnight excursions on Tiburón Island are required to obtain permission beforehand. Entry requires two separate official permits: one issued by the Seri Governor's office in Punta Chueca, and another provided by the ISLAS agency office in Bahía de Kino.
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