Topic: red tide

Caution tape closes off an entrance to the beach as Palm Beach County officials announced that all county beaches are closed due to red tide affecting coastal areas on October 4, 2018 in Lake Worth, Florida. (Getty/Joe Raedle)

A red tide engulfs Florida coast

Nicole Karlis
(<a href='url to photographer'>Ivan Cholakov</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

Florida threatened by red tide

Joanna Rothkopf