13 MAY 2019: It’s back. Mexico's Riviera Maya Caribbean coast is once again being plagued by sargassum – the foul smelling seaweed-type algae and experts suggest this could be the new normal.

The government of Mexico's coastal state of Quintana Roo which is home to popular resorts such as Cancun and Playa del Carmen calls this one of the biggest challenges that climate change has caused for the world, and it calls for a joint, multinational effort and a global commitment.

The problem did not exist prior to 2014, but experts say a possible combination of climate change, pollution from fertilizers and ocean flows and currents carrying the algae mats to the Caribbean has caused the problem to intensify.

While it may not have the global impact of melting of polar ice, sargassum filling the Caribbean could be one of the more visible climate-change events and least popular because of the vast number of tourists who visit the region's popular beaches.

It says it requires a joint, multinational effort and a global commitment.

While tourist arrivals at the Cancun airport were up 3.3 percent in March over the same month last year, many fear it won't last long with the sargassum fouled beaches, waters and the rotten egg smell that permeates the air..

As it decays and sinks, sargassum can smother the coral and accumulations on beaches can make it harder for sea turtles to nest.

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