Mystery over fish die-off in Florida

Estimated read time 2 min read

IE 11 is not supported. For an optimal experience visit our site on another browser.

  • Arrests made in connection to women saying they were punched in the face in New York City

    01:28

  • Evictions skyrocket nationwide as housing costs rise

    02:31

  • Rain and snow pound the West Coast ahead of Easter holiday

    01:38

  • Passengers injured when United Airlines flight experiences severe turbulence

    01:44

  • Officers find bottle of alcohol on driver they rescue from overturned car

    02:07

  • 7 people hurt on United flight after turbulence, high winds

    00:41

  • Florida hotel shootout captured on camera

    02:36

  • Georgia lawmakers tighten immigration laws after student’s death

    03:21

  • Department of Homeland Security working to stop illegal gun flow into Haiti

    04:52

  • Now Playing

    Mystery over fish die-off in Florida

    01:34

  • UP NEXT

    Biden fundraiser with three presidents raises $26 million

    01:52

  • Top CIA cybersecurity official speaks out on election interference, TikTok and passwords

    01:46

  • Haiti gang leader says he is open to talks with the government

    01:40

  • Giant crane arrives at scene of Baltimore bridge disaster

    02:43

  • New study shows a link between alcohol and heart disease in women

    03:37

  • One year since WSJ journalist Evan Gershkovich was detained in Russia

    01:25

  • 9-year-old driver pulled over by California police

    01:49

  • New dashcam video shows moments in deadly bus crash in Texas

    02:15

  • How Maine newspapers found a lifeline after being sold to nonprofit

    03:24

  • Washington state town outraged by false alarms from emergency dam system

    02:50

In the lower Florida Keys, something is making fish exhibit unusual behavior, and making them die. The problem affects some 40 species. NBC News’ Marissa Parra reports on the mystery.