Gulf of Mexico
Ocean Alliance

With 33 remaining, Feds list Gulf of Mexico Bryde’s whales as endangered

A rare baleen whale found in the Gulf of Mexico has gained protection under the Endangered Species Act. The Gulf of Mexico Bryde’s whale is a subspecies of the Bryde’s whale and one of the most endangered whales in the world, according to the National Oceanic and Atmospheric Administration.

NOAA announced the decision to list the whale as endangered Friday (April 12.) The rule will go into effect May 15.

Threats to the species include energy exploration and development, oil spills and clean up efforts, vessel strikes, human noise and entanglement in fishing gear. There are less than 100 of the whales left in the northeastern Gulf of Mexico near the De Soto canyon, where the population resides.

Genetic testing revealed that the Gulf of Mexico Bryde’s whales represent a unique evolutionary lineage distinct from two other populations of Bryde’s whales and should be considered a subspecies, said Laura Engleby, a marine mammal biologist with NOAA Fisheries. “This listing provides important tools to saving these whales,” she said.

Despite their genetic differences, the whales look very similar to other Bryde’s whale subspecies. But researchers have documented unique low-frequency calls from the Gulf of Mexico whales, including a long low moan.

The whales are typically seen alone or in pairs. Recent sightings of the whales have been limited to the northeastern Gulf, but historic whaling records indicate that the whales’ range included waters in the north-central and southern Gulf, Engleby said.

Still, not much is known about the subspecies. Research is underway to better understand the whales, including their physical, oceanographic and biological features. The project is funded by administrative and civil penalties for Clean Water Act violations stemming from the Deepwater Horizon oil spill.

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NRDC: Endangered Gulf of Mexico Whale Granted Long-Overdue Protections

After years of delay, the National Marine Fisheries Service (NMFS) listed the Gulf of Mexico whale as endangered today. “Even with this administration’s record on endangered species, the need to list the Gulf of Mexico whale was undeniable,” says Zak Smith, senior attorney with the Marine Mammal Protection Project at NRDC, which—together with Healthy Gulf, sued NMFS, the U.S. Secretary of Commerce, and the National Oceanic and Atmospheric Administration in February to compel the listing of the whale as endangered under the Endangered Species Act.

The Gulf of Mexico whale is one of the most endangered species on the planet. Once found throughout much of the northern Gulf, its population has now been reduced to the upper waters of a single submarine canyon, lying largely off the Florida panhandle.

The 2010 BP oil disaster alone killed an estimated 22 percent of the species, and now just an estimated 33 individuals remain. Oil and gas exploration and development, oil spills, oil spill response, and the disruptive noise associated with seismic blastingwere all included in a list of 29 threats to the species, previously identified by NMFS. “With so few remaining, the loss of even one Gulf of Mexico whale puts the entire population in jeopardy,” Michael Jasny, director of the Marine Mammal Protection Project, has said.

Following an NRDC petition, the Obama administration concluded in late 2016 that the Gulf of Mexico whale was in danger of extinction throughout all of its range and issued a proposal to list it. Under the Endangered Species Act, NMFS was required to take action to protect the species within a year of that recommendation, but the Trump administration failed to do so, which led to the February lawsuit. “Because of this listing, the Gulf of Mexico whale now has a fighting chance for survival and to rebound from the brink of extinction,” Smith says.

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See also NOAA SPECIES DIRECTORY Gulf of Mexico Bryde's Whale . . .