Bioluminescence is a natural phenomenon that occurs when certain microorganisms present in the ocean or lagoons produce chemical reactions when they are disturbed or agitated. For this reason, at night the water can be seen glowing in a bright, fluorescent blue color, similar to stars reflected on the surface. When you touch the water or swim in it, the lights move and become even more visible. This phenomenon can only be observed in a few places in Mexico: Holbox, Quintana Roo; Xpicob, Campeche; Bucerías, Nayarit; and of course, the Lagoons of Manialtepec and Chacahua in Oaxaca.
In Oaxaca, the best place to observe bioluminescence is the Manialtepec Lagoon, located approximately 20 minutes from Puerto Escondido. Thanks to the mixture of fresh and salt water, the ideal environment is created for this spectacular bioluminescent phenomenon to occur.
However, it is not visible all the time, as it depends on various natural factors such as the phase of the moon, the tides, and the water temperature.
Lunar Effect: The visibility of this phenomenon depends directly on the lunar phase. It is best observed when there is greater darkness, especially during a new moon. In contrast, on full moon nights, it is unlikely to be seen clearly. For this reason, it is important to check the lunar calendar or inquire before booking the lagoon tour, in order to avoid a less satisfying experience.
Low tide: when the sea is calm, there is a greater chance of observing the phenomenon, as this is when a higher concentration of the microorganisms that produce this effect gathers.
The best months to observe bioluminescence: largely depend on the lunar calendar. For example, November is not usually the most suitable month for this activity, as there is a full moon during much of the month, which reduces the visibility of the phenomenon. Therefore, the most recommended months are during the summer, especially from June to October.
Recommendations for a better experience during the tour:
Bioluminescence is best observed when there is no light at all; therefore, it is necessary to go deeper into the lagoon to see the phenomenon more clearly. There are also small floating houses where the phenomenon can be appreciated in greater detail.
What to bring for the experience
It is recommended to wear comfortable clothing for the transfer if you are coming from Bahías de Huatulco, as the journey is a bit long. It is also advisable to bring a swimsuit, towel, and sandals for swimming in the lagoon. If you use sunscreen or insect repellent, please make sure it is biodegradable to avoid contaminating the lagoon.
Additionally, it is recommended to bring cash in case you would like to have dinner somewhere before or after the experience.
How to get to Manialtepec Lagoon
From Puerto Escondido, the trip to the lagoon takes approximately 20 minutes, while from Bahías de Huatulco the distance is about two and a half hours.
At Ocean Travel Huatulco, we focus on ensuring you enjoy the experience in the most pleasant way possible. For this reason, we offer the Bioluminescence + Turtle Release Tour, in which our operators pick up guests directly from their accommodation in Huatulco.
To make the transfer more enjoyable and less hard, we make a stop at a beach near Puerto Escondido, where the turtle release takes place and you can enjoy the sunset and beautiful evening views. Afterwards, the journey continues to Manialtepec Lagoon to experience the magic of bioluminescence.
If you’re planning to visit Huatulco or Puerto Escondido, this experience should definitely be on your list.
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