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Laguna de Manialtepec (Bioluminescence)

Swim in glowing bioluminescent waters—one of Mexico's most magical natural phenomena

3-4 hours (evening tour) or combine with Puerto Escondido overnight

450 MXN(Night bioluminescence tours from Puerto Escondido run 450-600 MXN ($22-30). Tours from Huatulco run 950-1,500 MXN ($47-75) including transport. Best to combine with Puerto Escondido visit.)

New moon periods (darkest nights) September-May for strongest bioluminescence. Water temperature affects intensity—warmer months (May-October) often show brighter displays. Check recent reports as conditions vary. Avoid full moon—too bright.

Overview

Laguna de Manialtepec offers one of Mexico's most magical natural experiences: **swimming in bioluminescent waters** that glow ethereal blue-green when disturbed. Located about 2.5 hours from Huatulco via Puerto Escondido, this freshwater lagoon harbors dinoflagellates (microscopic organisms) that produce light when agitated—every stroke through the water creates trails of sparkles, and your body glows like something from Avatar. Tours depart in the evening, paddling into the lagoon as darkness falls, then swimming in the otherworldly glow. The lagoon is also a significant **bird sanctuary** with 300+ species including herons, egrets, ibis, kingfishers, and seasonal migratory birds—daytime kayak tours focus on this ecological richness. The surrounding mangrove ecosystem is one of Oaxaca's most important wetlands. **Best conditions for bioluminescence: new moon (darkest nights), September-May, warm water temperatures.** The phenomenon varies seasonally and isn't guaranteed—check recent reports before booking.

Highlights

Swim in bioluminescent waters that glow when disturbed

Dinoflagellates create trails of blue-green light with every movement

One of Mexico's most accessible bioluminescent lagoons

Bird sanctuary with 300+ species—excellent daytime kayaking

Herons, egrets, ibis, kingfishers, and migratory species

Important mangrove wetland ecosystem

Evening paddle as the lagoon comes alive after dark

Best during new moon for darkest conditions

Combine with Puerto Escondido surf beach for overnight trip

Sunrise bird tours available as alternative to night bioluminescence

Practical Information

Suggested Duration

3-4 hours (evening tour) or combine with Puerto Escondido overnight

Entrance Fee

450 MXN

Night bioluminescence tours from Puerto Escondido run 450-600 MXN ($22-30). Tours from Huatulco run 950-1,500 MXN ($47-75) including transport. Best to combine with Puerto Escondido visit.

Best Time to Visit

How to Get There

Organized TourCar/RentalTaxiColectivo

Location

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