North Atlantic right whale experts on both sides of the border express cautious optimism following a rise in the number of new calves born this year. A total of 23 calves were welcomed during the calving season from November to April off the southeastern U.S., marking the highest count since 2009.
Amy Warren, a scientific program officer at the New England Aquarium’s Anderson Cabot Center for Ocean Life, described the 23 new calves as a hopeful sign, emphasizing the importance of their survival into adulthood to contribute to the population. The North Atlantic right whales are critically endangered, with only 380 remaining worldwide based on the latest official estimate from 2024.
The decline in calving numbers over the past decade has been a concern, with an average of 10 to 15 new calves annually compared to 20 calves per year two to three decades ago. The absence of known calves in 2018 highlighted the challenges faced by these majestic creatures.
Warren noted that factors influencing the increased calf births this year remain uncertain, but the health of the mothers, particularly their food intake, plays a crucial role. North Atlantic right whales rely on specific plankton for sustenance, and the impact of climate change shifting their food sources further north has posed challenges, especially during the calving period.
Aside from food availability, human-induced stressors such as ocean noise, vessel traffic, and entanglements in fishing gear can affect the well-being of North Atlantic right whales. Conservation efforts, including fishery closures and speed restrictions for marine vessels, have been implemented in both Canadian and U.S. waters to safeguard these marine mammals.
The positive news of increased calf births this year is further highlighted by a reduced gap between successive calvings for some mothers, indicating improved reproductive health. The possibility of healthier mothers contributing to the growth of the whale population is a promising development, as highlighted by Warren.
While the 23 new calves are a reason for optimism, Warren emphasized the need for sustained efforts to ensure the recovery of a species that once numbered in the thousands but now faces a precarious population size.
Moving forward, it is crucial to address the ongoing population decline by aiming for around 50 calf births annually over several years. The whales have been observed moving northward, with sightings in the Gulf of St. Lawrence for the first time this year, offering hope for researchers monitoring their progress.
The slight baby boom this year is welcomed news, but sustained conservation measures and collaborative efforts will be essential to secure the future of the North Atlantic right whale population.
