Why is Cancun beach so blue?

The water appears blue due to the fact that the ocean absorbs all wavelengths of light very well, except for the short wavelengths of blue. The fact that tropical oceans are clear means that they are lacking in suspended sediment and plankton.



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Seaweed and algae in the ocean´s floor, can darken the color of the water or give a green aspect to it. Plankton, algae and other organisms transform blue color into green. Also if there is seaweed floating light cannot penetrate the surface and shed light deep enough.

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Additionally, the water at Playa Norte is so clear that it's nearly see-through, with sandy beaches that have been bleached white by the sun. However, if you want a secluded and off-the-beaten-track beach, Isla Blanca in Costa Mujeres or Playa Maroma are both excellent picks for the best beaches Cancun has to offer.

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You can swim peacefully! There are no dangerous species near the coasts of Cancun and the Riviera Maya. No shark attack, no jellyfish schools, no sea snakes! Beware of stingrays in the Caribbean Sea.

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Although the sea that borders Cancun and the Riviera Maya is known for its beauty, it is not always totally calm! Strong currents and big waves can make some beaches in the Riviera Maya dangerous. You have to watch children while they swim! And even some beaches are only recommended for seasoned swimmers.

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Playa Maroma (Maroma Beach), located at around km 55 of the Cancun-Chetumal Highway in the Riviera Maya, is considered by many to be one of the best beaches in the world due to its size, the incredible blue color of the water and amazing snorkeling right off shore.

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To the OP, in all seriousness, the water in Cancun is fine for bathing/showering; I wouldn't recommend you drink it though. It's not that the water is inherently unsafe it's that it almost certainly has minerals dissolved in it that your body isn't used to and may cause intestinal upset.

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The reason why the Cancun sand is always cool is because the color reflects the sun as opposed to absorbing it. In addition, 70% of this sand is composed of defected pieces of coral expelled by Parrotfish.

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It is in Puerto Bahía Balandra (Balandra Bay), a sheltered area in the Gulf of California just across from Isla Espiritu Santo, a UNESCO World Heritage Site that has what many consider the bluest water in Mexico.

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3. Be cautious at night if you're traveling alone – Cancún isn't the most dangerous place at night, but in some places, it's not as well lit as it should be. Don't walk around alone late at night if you can avoid it.

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The Best Beaches in Cancun
  • Playa Delfines. Come first thing in the morning and Cancun is so quiet. ...
  • Playa Marlín. The water here is crystal clear! ...
  • Playa Gaviota Azul. This is the best beach in Mexico when the seaweed isn't around. ...
  • Playa Chac Mool. ...
  • Playa Caracol. ...
  • Playa Tortugas. ...
  • Playa Norte – Isla Mujeres. ...
  • Playa Akumal.


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Yes, absolutely. Cancun is home to some of the most amazing sea life that I have ever seen, so don't miss the chance to witness it for yourself! Snorkeling here is one of the best things to do in Mexico and there are just so many incredible creatures to see.

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Maldives. The Maldives, located in the middle of the Indian Ocean, is made up of more than 1,000 coral islands and some of the bluest waters in the world.

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