Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Polar air to bring October-like chill to 250 million in central, eastern US. Get the forecast Chevron right
Peak hurricane season is almost here, but where are the storms? Get answers here Chevron right

Columbus, OH

77°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Columbus

Ohio

77°
No results found.
Try searching for a city, zip code or point of interest.
settings
Columbus, OH Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

AccuWeather Early Hurricane Center Top Stories Trending Today Astronomy Heat Climate Health Recreation In Memoriam Case Studies Blogs & Webinars

News / Weather News

At least 800 tons of dead sea life washed up in Tampa Bay

By Lauren Fox, AccuWeather staff writer

Updated Jul 19, 2021 7:49 PM EDT

Copied

Wind and currents are two important factors that determine how red tide spreads. Recently, the algae was pushed closer to shore in the Tampa Bay area killing several fish.

Hundreds of tons of dead sea life washed up along the shores of Tampa Bay due to a natural phenomenon known as a "red tide," and now local officials calling on the state government for help in cleaning up the the massive mess.

Nearly 800 tons of dead sea life were collected along the shores that consisted of fish, dolphins, sea turtles, eels and stingrays, according to St. Petersburg Mayor Rick Kriseman.

"You cannot go outside in east St. Petersburg without choking on the smell," Twitter user Peter Schorsch wrote.

A video captured on July 8 in Tampa Bay showed piles of dead fish floating along the coastline as a result of a red tide. (Twitter/@aagreene87)

On July 14, St. Petersburgh Deputy Mayor Dr. Kanika Tomalin called for state assistance in removing the dead sea life. Tomalin also asked that residents be patient with the cleanup process as workers continued to clear the waterways.

"It's pretty awful. The odor sticks to you. It stays in your nasal passages,” Kriseman said during a news conference, CL Tampa Bay reported. “Then, there's the emotional toll of just dealing with all the dead animals.”

Red tides are naturally occurring algae blooms that form in many coastal areas across the globe, AccuWeather Meteorologist Derek Witt said. They are called "red tides" in reference to how the blooms make the water appear. When the concentrations of red tide algae blooms are high, the water can appear red, orange, brown or a mix of all three.

The storm blew in all the dead fish from Red Tide into the canals and it’s heartbreaking 💔 What are we doing pic.twitter.com/v5RqSZUy9d

— Abby (@aagreene87) July 8, 2021

Witt explained that these algae blooms often pop up as a result of upwelling in costal locations. Upwelling is when wind blows across the surface of water, pushing it away from the coast, and can occur as a result of seasonal wind shifts or after a storm system moves off the coast.

CLICK HERE FOR THE FREE ACCUWEATHER APP

"This causes deeper water to be brought up to replace the displaced surface water, and the deeper water is usually colder and rich in nutrients like nitrate and phosphates," Witt explained. "This increase in nutrient availability allows the algae to thrive and spread rapidly."

Around 200 workers are involved in the cleanup process after a red tide brought hundreds of tons of dead marine life to the shores of Tampa Bay. (City of St. Petersburg)

The toxins released by the algae blooms can be harmful to marine life, resulting in fish deaths, president and CEO of Mote Marine Laboratory and Aquarium Dr. Michael Crosby said. The decomposing fish can then lead to the formation of even more algae due to their high nitrogen content.

Tropical Storm Elsa made landfall in Taylor County along the Florida coastline on July 7, meaning it could have potentially been involved in the bloom.

"It is possible that Elsa played a part in the bloom. However, based on Elsa’s track, it seems less likely that it would’ve generated upwelling in Tampa Bay," Witt said. "Rather, the excess run-off from rain over the Florida peninsula may have cause more nutrients to be washed out in the bay."

Human activity can also be responsible for algae blooms when sewage and agriculture runoff bring more nutrients into the ocean. To prevent this from happening during the summer months when more rainfall is expected, the city of St. Petersburg announced a fertilizer ban on Thursday, which will be in effect until Sept. 30.

The city of St. Petersburg, Florida, is asking residents living along the coastline to remove any dead sea life that washes along the shores located on their property, as the workers clearing out the coast will not enter private property. (City of St. Petersburg)

Eight-hundred tons of dead sea life and counting may seem like a daunting number to many, but Crosby said this bloom is "far from being even in the top 20 of the worst blooms."

To clear out the shores naturally, Crosby told AccuWeather's Kim Leoffler that the bay would need easterly winds mixed with currents to carry the algae away from the shoreline. The shape of Tampa Bay's waterways, however, could make that process a difficult one.

"The dynamics in each of these more restricted waterways will require different winds to bring them out," Crosby explained.

SEE ALSO:

Hurricane season: AccuWeather's guide for first-timers
Meet Probie, an essential sidekick in Oregon firefighting efforts
Mystery at 'Skeleton Lake' continues to puzzle and enthrall

Mote Marine Laboratory and Aquarium is currently in the midst of a six-year study on how to reduce the effects of algae blooms, and the current algae bloom has provided the researchers with the perfect opportunity to test their theories in the real world.

"We're hoping to take advantage of the current red tide situation to see if we can rapidly get out and field test a couple of these in a very small isolated kind of a study," Crosby said.

Reporting by Kim Leoffler

Keep checking back on AccuWeather.com and stay tuned to the AccuWeather Network on DirecTV, Frontier, Spectrum, FuboTV, Philo, and Verizon Fios.

Report a Typo
Comments that don't add to the conversation may be automatically or manually removed by Facebook or AccuWeather. Profanity, personal attacks, and spam will not be tolerated.
Comments
Hide Comments

Weather News

Weather News

Alaska woman seriously injured in bear attack while jogging

Aug. 29, 2025
Weather Forecasts

Late summer heat wave to build in Washington, Oregon

Aug. 31, 2025
Weather Forecasts

Moisture surging into Southwest: Will SoCal see any rain?

Aug. 31, 2025
video

How lightning triggers wildfires

Aug. 5, 2025
Show more Show less Chevron down

Topics

AccuWeather Early

Hurricane Center

Top Stories

Trending Today

Astronomy

Heat

Climate

Health

Recreation

In Memoriam

Case Studies

Blogs & Webinars

Top Stories

Weather Forecasts

U.S. Labor Day: Who's hot, who's cool and who's getting rained on?

7 minutes ago

Weather Forecasts

Polar air to bring October-like chill to 250 million in U.S.

6 minutes ago

Astronomy

Northern lights could glow over more than a dozen states Monday night

5 hours ago

Hurricane

Hurricane Katrina by the Numbers, 20 years later

2 days ago

Hurricane

Labor Day is almost here. Where are the hurricanes?

6 minutes ago

More Stories

Featured Stories

Astronomy

2 more celestial sights to see before autumn's arrival

2 days ago

Travel

Gas hasn’t been this cheap on Labor Day since 2020

2 days ago

Weather News

Why meteorological, astronomical fall start on different dates

2 days ago

Live Blog

Clearing the air: Leaves are falling but it's not autumn yet

LATEST ENTRY

Why are there so many leaves falling? Is this an early autumn?

3 days ago

Weather News

Turtle with unique peanut-shaped shell turns 41 in Missouri

3 days ago

AccuWeather Weather News At least 800 tons of dead sea life washed up in Tampa Bay
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2025 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information

...

...

...