Groups Move to Sue Over Manatee Habitat Delay

Conservation groups say federal regulators have missed deadlines to finalize critical habitat protections for Florida and Antillean manatees.

Updated on Nov. 9, 2026 in Wildlife

Groups Move to Sue Over Manatee Habitat Delay

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Should the federal government be required to protect wildlife habitat on schedule?

Defenders of Wildlife and the Center for Biological Diversity sent a required 60-day notice of intent to sue the U.S. Fish and Wildlife Service over overdue critical habitat designations for manatees. The notice was sent to Secretary of the Interior Doug Burgum and several Service officials.

Why it matters

The Florida manatee's critical habitat designation has remained unchanged since 1976, despite the Service acknowledging in 2008 that an update was needed. Manatees cannot recover without safe and protected places to feed, shelter and raise young.

The 2024 Service proposal covered nearly 1 million acres of new Florida critical habitat and almost 80,000 acres in Puerto Rico, while the Antillean manatee still has no designated critical habitat. Manatees have experienced six unusual mortality events in the last 20 years, and the final designation is overdue by more than a year.

The players

U.S. Fish and Wildlife Service

The federal agency responsible for designating and protecting critical habitat for manatees under the Endangered Species Act.

Defenders of Wildlife

A national conservation nonprofit that works to protect imperiled wildlife and their habitats through advocacy and litigation.

Center for Biological Diversity

A conservation organization known for using legal action to enforce federal endangered species protections.

Doug Burgum

The U.S. Secretary of the Interior, who oversees the Fish and Wildlife Service and received the notice.

The details

Conservation groups argue that the Service has failed to finalize critical habitat protections for manatees, citing warming climate and development that are eroding warm-water habitat and foraging grounds in Florida. The notice of intent to sue is the required step before litigation can proceed.

1976: Florida manatee critical habitat designation was last set.
2008: The Service acknowledged that a Florida manatee habitat update was needed.
2024: The Service proposed modernized manatee habitat designations.
November 9, 2026: Notice of intent to sue was announced.

Industry Dynamics

The dispute follows a familiar pattern under the Endangered Species Act, where critical habitat designations are delayed and conservation groups turn to the 60-day notice and litigation process to force action. The overdue manatee designations highlight how slow federal rulemaking can leave protected species without updated habitat maps for decades.

Readers who want to follow the case can track the 60-day notice period and any subsequent lawsuit filed against the Fish and Wildlife Service. Boaters and coastal residents in Florida should be aware of manatee habitat areas that may be designated in the future.

The takeaway

Protecting manatees depends on finalizing habitat designations that reflect today's warming waters and coastal development, not habitat maps from 1976. Keeping an eye on the notice period and any resulting lawsuit will show whether federal habitat protections move forward.