North Atlantic Right Whales Experience Strongest Breeding Season in 15 Years

Georgia researchers document 23 calves as endangered population shows signs of resilience

The critically endangered North Atlantic right whale population, has experienced a remarkable calving season off the Georgia coast—the strongest year for births since 2009. Survey teams documented at least 23 newborn calves during the 2025-2026 breeding cycle, representing approximately a third of the entire surviving population.

A Season of Abundance

Researchers from the Georgia Department of Natural Resources observed right whales consistently throughout the calving grounds this winter, logging successful surveys nearly every day when weather permitted. Teams working from both planes and boats saw whales of all ages—from newborns to animals in their 50s—suggesting robust multi-generational activity in the breeding grounds.

The success of the season reflects the seasonal migration pattern of these massive marine mammals. Starting in November, right whales travel south from their feeding areas in New England and Canadian waters to breed in shallow coastal waters off South Carolina, Georgia, and Florida. Scientists believe the water temperature in these southeastern breeding grounds provides optimal conditions for both pregnant females and their newborns.

Rescue and Loss

The season began dramatically in December when rescue teams responded to a four-year-old male whale trapped in abandoned fishing gear. Over two days of coordinated effort involving state and federal agencies, rescuers removed more than 300 feet of rope that had wrapped around the animal's body. Though a tracking buoy was attached, the whale ultimately perished, with its remains discovered off North Carolina in January.

Investigation revealed the entangling rope had been lost by a Canadian snow crab fishing operation in 2020. This finding has prompted researchers to examine whether fishing closure policies in that area were adequate.

Positive Indicators of Population Health

Several observations suggest the population may be stabilizing. Two first-time mothers in the breeding population were only 10 years old, which researchers view as an encouraging sign. While female right whales reach sexual maturity around age 10, animals in this population have historically delayed breeding until their mid-teens or early 20s due to environmental stress. Earlier reproduction could accelerate population recovery.

Another notable case involved a whale named Juno, who gave birth this season just one year after losing her previous calf to a vessel strike—a faster birth interval than typical. Her survival and subsequent successful breeding despite previous entanglement and boat collision injuries demonstrate the species' resilience when human threats are minimized.

A 44-year-old female successfully delivered her eighth known calf, continuing her contribution to population growth into her later years.

Ongoing Threats

Despite the encouraging calving numbers, significant dangers persist. At least four mother whales in the current cohort have been struck by vessels, highlighting the ongoing threat of maritime traffic. Entanglement in fishing gear remains another critical hazard.

Researchers emphasize that while 23 calves in a single season marks a milestone, survival to adulthood is paramount. The population requires sustained high birth rates and improved protections against human-related mortality to achieve genuine recovery.

"Every calf matters, but we need these numbers to consistently remain in the 20s for this species to have a realistic chance of long-term survival," according to researchers involved in the aerial surveys that documented this season.

The 2025-2026 calving season represents a collaborative success involving government researchers, wildlife organizations, fisheries management, and local communities working together to protect critical breeding habitat and reduce anthropogenic threats.

This article is a rewrite of reporting by Mary Landers, originally published in The Current (thecurrentga.org) on April 21, 2026.