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This Cave in the Yucatan Peninsula Puts Dozens of Sharks to Sleep; Video Goes Viral

A rare natural phenomenon occurs in an underwater cave on Isla Mujeres in Quintana Roo: freshwater streams are mixed with the salt water of the Caribbean, creating conditions that leave sharks in a state of apparent immobility. And it is that the mixture reduces salinity and increases dissolved oxygen, which causes the animals to remain calm, almost as if they were sedated, without need for swimming. It may interest you: Beware! Shark sightings …
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A rare natural phenomenon occurs in an underwater cave on Isla Mujeres in Quintana Roo: freshwater streams are mixed with the salt water of the Caribbean, creating conditions that leave sharks in a state of apparent immobility. And it is that the mixture reduces salinity and increases dissolved oxygen, which causes the animals to remain calm, almost as if they were sedated, without need for swimming. It may interest you: Beware! Shark sightings …

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aztecayucatan.com broke the news on Monday, August 17, 2026.
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