Isla Isabel National Park, National park on volcanic island in Nayarit, Mexico.

Isla Isabel National Park is a protected area on a volcanic island off the coast of Nayarit, featuring rocky cliffs, coral reefs, and tropical vegetation. The territory encompasses both land and marine zones where diverse marine creatures and bird species live and breed.

The Mexican government designated Isla Isabel as a national park in 1980 to safeguard marine wildlife and migratory bird populations. This protective status became crucial for preserving seabird colonies and marine ecosystems in the region.

Isla Isabel is known in Mexico as the "Galápagos of Mexico" for its seabird colonies, including magnificent frigatebirds with their red throat pouches and blue-footed boobies. The island's name honours Isabel, and fishermen from San Blas and Santiago Ixcuintla have long used its waters, now keeping to the protected zones of the 1980 national park.

Boats leave from San Blas, about 70 km away on the mainland, and the crossing to the island takes around two hours, so plan for a full day and open-water conditions. The island has no regular visitor facilities, so bring water, food and sun protection. Access is by permit through authorised operators, and stays are kept short to limit disturbance to nesting birds.

The waters surrounding the island are home to three endangered sea turtle species and seasonal whale sharks that pass through these waters. This chance to encounter these large marine animals makes the location memorable for snorkelers and divers.