Historic Transatlantic Journey of North Atlantic Right Whale Documented in Boston

On November 19, 2025, researchers from the Center for Coastal Studies (CCS) made a groundbreaking discovery in Massachusetts Bay: a North Atlantic right whale that had previously been sighted off the coast of Ireland. This sighting marks the first documented case of a right whale traveling approximately 3,000 miles across the Atlantic Ocean, highlighting the species' remarkable resilience and adaptability. The whale was initially observed in Donegal Bay, Ireland, in July 2024, and its identification was confirmed through unique features noted by scientists at the New England Aquarium’s Anderson Cabot Center for Ocean Life.

Researchers surprised by right whale traveling coast-to-coast across the AtlanticThe Republican (Masslive.com)

The sighting is significant not only because of the distance traveled but also because it suggests that historical habitats for North Atlantic right whales may still be relevant. Researchers emphasize that the endangered species, which has a population of fewer than 400 individuals, is actively searching for suitable habitats. “Seeing a whale photographed in Ireland reappear off Boston is extraordinary. Encounters like this highlight both their resilience and the importance of international cooperation to support their recovery,” stated Dr. Daniel Palacios, Director of the Right Whale Ecology Program at CCS.

Researchers surprised by right whale traveling coast-to-coast across the AtlanticThe Republican (Masslive.com)

The identification of the whale was a collaborative effort involving multiple organizations. Pádraig Whooley, Sightings Officer at the Irish Whale & Dolphin Group, played a crucial role by sharing information about the unusual sighting in Ireland, which aided in the identification process. Lindsey Jones, a scientist at the Anderson Cabot Center, expressed excitement over the successful photo-ID match, noting that it was uncertain whether the quality of the images from Ireland would suffice for identification.

The Republican (Masslive.com)

Despite the excitement surrounding this discovery, concerns remain regarding the conservation status of the North Atlantic right whale. The species has been classified as critically endangered by the International Union for Conservation of Nature (IUCN). Prior to 2016, it was believed that these whales were not found in Irish waters due to historical commercial whaling practices. The ongoing threats to their population, including entanglement in fishing gear and habitat loss, underscore the need for continued conservation efforts.

The Republican (Masslive.com)

The right whale season in Massachusetts typically runs from December through mid-May, but CCS has begun conducting supplemental surveys in October and November to monitor early arrivals. This proactive approach aims to enhance understanding of the whales' movements and habitat preferences, which are critical for their recovery.

The Republican (Masslive.com)

• “While photographing the humpbacks, we were surprised to spot a lone right whale feeding at the surface nearby.” — Ryan Schosberg, Researcher, Center for Coastal Studies

The Republican (Masslive.com)

• “Encounters like this highlight both their resilience and the importance of international cooperation to support their recovery,” said Dr.” — Dr. Daniel Palacios, Director, Right Whale Ecology Program, Center for Coastal Studies

Researchers surprised by right whale traveling coast-to-coast across the Atlantic

• “But where else would one expect to find a right whale with Irish connections if not off Boston?” — Lindsey Jones, Scientist, Anderson Cabot Center for Ocean Life

The Republican (Masslive.com)

This extraordinary sighting not only enriches the understanding of North Atlantic right whale behavior but also emphasizes the importance of international collaboration in marine conservation efforts.

Researchers surprised by right whale traveling coast-to-coast across the Atlantic