28/08/2023

saltern: a set of pools in which seawater is left to evaporate to make salt.

microorganism :a microscopic organism, especially a bacterium, virus, or fungus.

shade, hue: a color, especially with regard to how light or dark it is.

salinity: the quality or degree of being saline.

evaporation : the process of turning from liquid into vapor.

hostile : unfriendly, antagonistic.

Why is the water in Las Coloradas pink?

In the northern corner of the paradisiacal Yucatán Peninsula in Mexico, you'll find a scene that seems taken from a dream: Las Coloradas. This saltern, with their intense pink waters, have captivated the imagination of travelers and scientists alike, raising the question of why this corner of nature appears dyed with the hues of a fairy tale.

The Dance of Microorganisms and Pigments

The secret behind the astonishing color of Las Coloradas lies within a microscopic orchestra. In the saline waters of this region, a community of specialized microorganisms known as halophiles takes center stage in a fascinating performance. These halophiles include various species of algae and bacteria that have evolved to thrive in high salinity environments. Like masterful artists, these microorganisms produce pigments, especially carotenoids, that tint the water with shades of pink. Among the standout stars are the halophilic archaea and Dunaliella salina, which accumulate pigments like α-bacterioruberin/bacteriorhodopsin and zeaxanthin/β-carotene, respectively. This symphony of pigments results in the characteristic pink color that paints the lagoons.

The Effect of Evaporation and Minerals

Another key player in this natural theater is evaporation. As seawater evaporates in the saltern, the salt concentration drastically increases. This high salinity creates a hostile environment for many forms of life but provides the ideal stage for the halophiles. 

The Brush of Sunlight and Geography

Sunlight plays a fundamental role in the portrayal of this pink spectacle. The intensity of sunlight in the region interacts with the pigments present in the water, enhancing the hue and giving it an even more impressive shade. Furthermore, the geographical location of Las Coloradas is crucial to this phenomenon. The formation of saltern and the evaporation of water are facilitated by the geographical conditions of the area, contributing to the unique charm of this place.

From Saltern to World-Renowned Tourist Destination

Over time, Las Coloradas have transitioned from their original role as salt producers to becoming a globally renowned tourist attraction. Travelers from all around the world venture to this corner of natural wonders to witness the breathtaking display of color. 

In conclusion, Las Coloradas offer us a glimpse into the intricate magic of nature. The enigma of the pink waters combines the adaptation of microorganisms, the dance of pigments, the evaporation of water, and the intervention of sunlight to create a dazzling spectacle. This magical corner on the Yucatán Peninsula reminds us of the boundless creativity of nature and invites us to admire and preserve its beauty.

ANSWER THE FOLLOWING QUESTIONS

1. Why is the water in Las Coloradas pink?

2. What are the specialized microorganisms responsible for the pink color?

3. What role does evaporation play in the formation of pink waters in Las Coloradas?

4. What has been the transformation of Las Coloradas over time?