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A red tide off Texas in the early 2000s.

A red tide off Texas in the early 2000s.

NOAA/Chase Fountain/Texas Parks & Wildlife

Red tide expanding toward Florida beaches

The largest red tide observed since 2005 is advancing toward the Florida coast. The bloom of the microscopic algae Karenia brevis is now about 97 kilometers wide and 145 kilometers long, according to an NBC News report. Wildlife officials estimate the tide has killed about 1000 fish, as well as crabs and octopuses, and could be a threat to endangered manatees. It’s still about 32 kilometers from the shore, but as it gets closer, airborne toxins released by breaking waves could also be harmful to people with respiratory problems.

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