Thousands of acres of seagrass in Florida have died because of nutrient pollution that has caused algae blooms and left manatees without an adequate food source. Learn more about this issue, projects that are being undertaken, and ways you can help

Date: July 16, 2021
This page will be updated as new information becomes available. 

Save the Manatee Club has received many calls, comments, and questions in regard to the loss of seagrass, algae blooms, and increased manatee mortalities in Florida. We encourage you to share your stories and your photographs with your online network of contacts and with your elected officials at the local, state, and federal levels (see contact information below). Please ask for their help in healing our waters.

An algae bloom in the Indian River Lagoon.
An algae bloom in the Indian River Lagoon.

Trouble for Manatees in the Indian River Lagoon

As the direct result of human derelictions over many decades, the Indian River Lagoon (IRL) on the East Coast of Florida has suffered a series of harmful algal blooms, leading to massive losses in seagrass coverage and, in turn, the recent deaths of a heart-rending number of manatees.

Manatees gathering at warm water locations such as powerplants along the IRL have faced an additional threat during the 2020-2021 winter season as there has been very little seagrass or vegetation for them to eat in the immediate vicinity. Traveling further for forage would mean deadly exposure to cold water, so the manatees ultimately choose to forgo feeding over dying from the cold. See more in our opinion editorial: A State of Emergency for Manatees in the Indian River Lagoon and Beyond.

Excessive human-produced nutrient pollution is a growing threat to all seagrass communities. When combined with the warming effects of climate change and sea level rise, these excess nutrients present an even greater danger to the future of seagrasses wherever they are found.

Manatee bones on shore of the Indian River Lagoon.
In February 2021, manatee bones were found washed up on shore by kayakers in the Indian River Lagoon.

Before the IRL can be functionally restored, it will be necessary to prevent new sources of nutrient pollution from entering the lagoon as well as strategically removing or sequestering legacy nutrients to make them unavailable as a source of new Harmful Algal Blooms (HAB). Ideally, seagrasses will begin to reestablish on their own, but the process may be facilitated through the restoration of filter feeding organisms and selective pilot seagrass restoration projects. Ultimately, we must reverse those conditions that lead to the loss of seagrasses in the first place if we are going to restore seagrasses.

What You Can Do

Please get involved with local nonprofit groups and elected leaders in your area to help address these issues. Dirty water is a threat to health, to our economy, and to the quality of life for humans and other species like manatees.

In Florida: