Guadalupe Island is a volcanic island located 150 statute miles off the west coast of Mexico's Baja California peninsula and about 250 miles southwest of Ensenada. The island is 35 km long and 9.5 km wide. The climate is warm and dry and gets most its precipitation during the winter months.

The island is inhabited by a handful of fishermen from a fishing cooperative who live in a small camp on the west side of the island. There is also said to be an abandoned fishing community on the east side of the island. They mainly fish for abalone, lobster and sea cucumbers. There is a small airport located in the center of the island that is seldom used.

The rough, rugged landscape of Guadalupe Island was formed from two ancient volcanoes and a volcanic ridge that rises to over 4,000 feet above sea level.

Guadalupe Island is a Mexican Marine Biosphere.

Many species of animal are endemic to the island. Guadalupe Island is a major breeding site for the Guadalupe Fur Seal. The Guadalupe Rock Wren , Guadalupe House Finch, and Guadalupe Junco are endemic along with several insects and many plants.

Unfortunately, there are also extinct plants and animals due to the destruction of habitat by goats that were brought to the island. These include five or six species of birds and many plants.