Known as “the world’s aquarium,” the Sea of Cortez (or Gulf of California) is one of the most biologically rich and stunning bodies of water on the planet. Nestled between the Baja California Peninsula and mainland Mexico, it’s home to hundreds of islands—each with its own personality, history, and ecosystem. Whether you’re an adventurer, a nature lover, or a sun seeker, the islands of the Sea of Cortez offer something truly magical.
Here are some of the most fascinating and beautiful islands to explore:
Just off the coast of La Paz, Isla Espíritu Santo is a UNESCO-protected biosphere reserve and one of Mexico’s most stunning natural treasures. Its dramatic red cliffs, turquoise waters, and white-sand beaches make it perfect for kayaking, snorkeling, and paddleboarding. You can even swim with friendly sea lions at Los Islotes—an unforgettable experience!
Connected to Espíritu Santo by a narrow channel, Isla Partida is often visited on the same trip. The calm, clear waters surrounding it are ideal for snorkeling and spotting tropical fish, rays, and even whale sharks during the season. Many consider it one of the most beautiful anchorages in Baja.
Isla San José is a large island north of Espíritu Santo, known for its rugged mountains, mangrove lagoons, and cactus-dotted desert landscape. It’s a great place for hiking, birdwatching, and exploring hidden coves that feel completely untouched by time.
Located near Loreto, Isla Danzante is part of the Bahía de Loreto National Park. This small island is surrounded by vibrant coral reefs, dramatic rock formations, and crystal-clear waters teeming with marine life. It’s a favorite stop for kayakers and eco-cruises.
Also near Loreto, Isla del Carmen is the largest island in the region. Once known for its salt mining, it’s now famous for its pristine beaches and abundant wildlife, including bighorn sheep, dolphins, and seasonal blue whales.
Isla Coronado boasts powdery white beaches and a dormant volcanic peak that you can hike for breathtaking views. Its warm, shallow bays make it perfect for snorkeling and swimming with sea turtles and playful sea lions.
Farther offshore from Loreto, Isla Monserrate is less visited and ideal for those seeking solitude. Its clear waters and coral reefs attract divers and snorkelers looking for a peaceful underwater paradise.
Perhaps the most photographed island in the Sea of Cortez, Isla San Francisco is shaped like a crescent moon and features dazzling turquoise water and white sand. It’s a popular anchorage for yachts and expedition cruises, perfect for hiking, paddleboarding, and sunset watching.
Known for its giant barrel cacti and unique reptiles found nowhere else, Isla Santa Catalina is a true biological wonder. Accessible from Loreto, this island offers incredible hiking trails and panoramic views of the shimmering gulf.
Renamed in honor of the famous ocean explorer, Isla Cerralvo lies near La Ventana and El Sargento. It’s known for world-class fishing, diving, and kitesurfing. Beneath its waters, you can encounter marlin, tuna, manta rays, and even dolphins.
The Islands of the Sea of Cortez are a living laboratory of life, where desert meets ocean and every day brings a new discovery. Whether you arrive by yacht, charter boat, or guided eco-tour, exploring these islands will leave you with a deep appreciation for the raw beauty and biodiversity of this UNESCO World Heritage site.
If you’re visiting Baja California Sur, don’t miss the chance to explore these incredible islands — nature’s own masterpieces floating in one of the most breathtaking seas on Earth.
Follow Us