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Do the Florida Keys have sargassum?

As sargassum washes ashore every year in Key West, locals and visitors alike are primarily annoyed by the smell of the sargassum quantity on the beach. This giant blob of seaweed breaks up along the shore to create a mess on public beaches in Monroe County, but there's not too much danger involved.



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Substantial sargassum is expected in June in both the Caribbean Sea and Gulf of Mexico, according to the May report from the University of South Florida. That's no surprise to beachgoers who have been seeing the smelly seaweed on Florida beaches from Pensacola to Brevard County.

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While exposed eastern shores are most likely to get hit by surges of sargassum, some beaches in Mexico have no sargassum. This includes Playa Norte on Isla Mujeres, Quintana Roo and Cozumel's western shore. They're generally seaweed-free.

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Sargassum season in the Mexican Caribbean typically runs from May through October, with July and August generally being the worst months for its arrival.

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Atlantic Beaches (North to South)
  • Jacksonville Beach (surfguru.com)
  • St. Augustine Beach (surfstationcam)
  • Flagler Beach Pier.
  • Ormond by the Sea.
  • Daytona Beach.
  • New Smyrna Beach.
  • Cocoa Beach (Jetty Park)
  • Cocoa Beach.


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You can also swim and enjoy other water sports like windsurfing and snorkeling as well as kayaking and paddleboarding in the clear, clean water inhabited by tropical fish.

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The Keys has the longest living coral reef in America, running 221 miles from Key Largo FL and continuing southwest to the Dry Tortugas National Park. The coral reefs protection keeps the waves from crashing ashore, which causes erosion. This also means the water inshore of the coral reefs is shallower, and calmer.

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Currently, beach cams in Fort Myers Beach and Naples show clear shorelines with little to no sargassum. It is noted that 'Seaweed Season' just ended, which tends to appear on Florida beaches in the spring, with a peak in June.

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Smathers Beach, Key West Smathers Beach is the largest and most popular public beach in Key West. Located along the Atlantic Ocean, this beach will dazzle and inspire you with its clear, crystal-like waters that gently lap against the shore, inviting you to take a dip and cool off from the tropical heat.

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Calusa Beach It's located within Bahia Honda State Park, between Big Pine Key and Marathon, on the Gulf side, which means its waters are sheltered and calm. The gentle Gulf is great for families with children who want to swim. Plus, Calusa Beach has ample parking and covered areas for picnicking.

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Are there Sharks in the Florida Keys? You bet. It is common to catch nurse sharks while fishing on the flats. These bottom dwellers are generally docile and will only act defensively if provoked, so if you see one out snorkeling or diving there is no need for alarm as long as you do not disturb it.

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USF reports it remains difficult to predict exact timing and location for individual beaching events but substantial amounts of the seaweed are expected in May in both the Caribbean Sea and Gulf of Mexico. June is forecast to be the likely peak of the 2023 season, but impacts are expected to continue into July.

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Popular resort hubs, including Playa del Carmen and Tulum, have ramped up efforts to deter sargassum from affecting travelers. What is this? Both destinations have set up temporary barriers and hired more cleaners in an effort to attract more travelers.

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In Grenada, Grand Anse regularly tops the list of the world's best beaches due to its crystal clear waters and its 2 kilometre long stretch of white sand dotted with palm trees. It's also blessedly free of sargassum seaweed.

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