Fish Kill in Biscayne Bay

Thousands of dead fish have been spotted floating in different locations in Biscayne Bay since Monday as water temperatures reached about 90 degrees and dissolved oxygen dropped to very low levels. They’ve been documented in photos from Miami Waterkeeper and concerned residents.

Miami Herald
Dead fish in Biscayne Bay near Morningside on Monday. Photo courtesy: Kathryn Mikesell

Florida Fish and Wildlife Conservation Commission is investigating after several City of Miami residents reported the dead fish in the bay near Morningside Park on Monday. Today Miami Dade County’s Department of Environmental and Resources Management (DERM) is reporting dead fish surfacing near the Julia Tuttle and Venetian Causeways.

In an email, DERM spokeswoman Tere Florin said the staff measured water temperatures near 90 degrees along with extremely low oxygen levels at about 3 feet deep.

“While we cannot be absolutely certain at this time, it appears that very high temperatures and very low dissolved oxygen levels in the shallow waters where the dead fish were observed by DERM staff earlier are likely contributing to or driving the situation,” she wrote.


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Published byMelanieDawn

Melanie Dawn Molina Wood is a Miami native currently living in the historic downtown district. She has earned her LEED Green Associate accreditation, the NAR GREEN designation, and an Eco-broker credential. She is also a proud member of the US Green Building Council, and a member of the Sierra Club. For more information about sustainability in Miami, or to connect with a real estate agent anywhere in the world, contact Melanie Dawn by text/phone at 305.801.3133, or by email at


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