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NAPLES (CBSMiami) — Tens of thousands of pounds of dead fish were removed from a bay in southwest Florida.

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People who live in Naples say the smell was overwhelming and some of the fish were still alive and gasping for oxygen.

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Naples officials believe the deaths are possibly caused by red tide that leads to a lack of oxygen in the water and a thick gooey substance that clogs the gills of fish.

A contractor hired by the county used nets to clean up the mess.

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So far, they collected more than 32-thousand-pounds of dead fish.