North Atlantic Right Whale Population Shows Promising Recovery After Decades of Decline

The population of North Atlantic right whales has shown encouraging growth despite previous declines. (Representative)

Portland:

Scientists have reported a continued positive trend in the population growth of one of the world's rarest whale species, the North Atlantic right whale.

According to a report released Tuesday by the North Atlantic Right Whale Consortium, the estimated population now stands at 384 animals, reflecting an increase of eight whales from the previous year. This marks the fourth consecutive year of slow population growth, with an overall gain of more than 7% since 2020.

This upward trajectory comes as welcome news following a concerning decline in the previous decade, during which the whale population decreased by approximately 25% between 2010 and 2020. These magnificent marine mammals have long been vulnerable to ship collisions and entanglement in fishing gear.

Philip Hamilton, a senior scientist with the New England Aquarium's Anderson Cabot Center for Ocean Life, attributes this recovery to effective conservation measures. The population estimate is calculated through collaboration between the center and the National Oceanic and Atmospheric Administration.

Hamilton particularly highlighted the importance of new management measures implemented in Canada designed to protect the whales in the Gulf of St. Lawrence, where their presence has increased.

"We know that a modest increase every year, if we can sustain it, will lead to population growth," Hamilton explained. "It's just whether or not we can sustain it."

Scientists have previously cautioned that despite this slow recovery, the whales continue to face threats from accidental deaths, necessitating stronger conservation efforts. However, Hamilton noted encouraging signs regarding reproduction rates, which had been a concern.

Researchers have observed that injured or undernourished whales are less likely to reproduce, contributing to insufficient birth rates for population sustainability. This year, however, four mother whales gave birth for the first time, and some established mothers had shorter intervals between calves.

In total, 11 calves were born. While this number fell short of researchers' hopes, the introduction of new females into the reproductive pool represents a positive development.

Heather Pettis, who leads the right whale research program at the Cabot Centre and chairs the North Atlantic Right Whale Consortium, emphasized that any number of new calves is beneficial in a year with no recorded mortalities.

"The slight increase in the population estimate, coupled with no detected mortalities and fewer detected injuries than in the last several years, leaves us cautiously optimistic about the future of North Atlantic right whales," Pettis said. "What we've seen before is this population can turn on a dime."

These whales were nearly driven to extinction during the commercial whaling era and have since been under federal protection for decades.

Their annual migration takes them from calving grounds off Florida and Georgia to feeding grounds near New England and Canada. Some scientists have suggested that ocean warming has made this journey more hazardous, as whales venture outside established protected areas in search of food.

Despite the positive trends, environmental groups warned Tuesday that the whales remain on the brink of extinction and require more robust protection measures for full recovery.

"Continued attacks on the Marine Mammal Protection Act and efforts to weaken NOAA's science-based safeguards put this fragile population at even greater risk. We need Congress to uphold, not undermine, the laws, programs, and experts that give North Atlantic right whales a fighting chance for continued survival," stated Gib Brogan, senior campaign director with Oceana.