A pod of 16 pilot whales was found stranded along the east side of Sable Island, a remote crescent-shaped island off the coast of Nova Scotia. All of the whales were dead when discovered during a routine survey conducted on June 10, according to the Marine Animal Response Society (MARS).

The whales were first spotted by Zoe Lucas, head of the Sable Island Institute and a longtime resident of the island, during her regular inspection of North Beach. Parks Canada, which has managed the island as a national park reserve since 2013, was notified of the stranding. However, the island’s isolated location—approximately 290 kilometres southeast of Halifax—hampered rescue efforts, according to Tonya Wimmer, co-executive director of MARS.

“The challenge with Sable Island is its remoteness,” Wimmer said. “Getting to the site with the necessary equipment in a timely manner is extremely difficult.” She added that some of the whales were already dying by the time Parks Canada personnel arrived at the scene, making a rescue impossible.

Pilot whales, members of the dolphin family closely related to killer whales, are recognizable by their dark coloration and bulbous foreheads. Commonly found in the North Atlantic and frequently seen off Canada’s East Coast, these cetaceans can grow up to seven metres in length and weigh as much as four tonnes, roughly twice the size of bottlenose dolphins.

Mass strandings of pilot whales have been documented globally for centuries, though the underlying causes remain uncertain. Experts suggest such events may result from a variety of factors, including human activities or natural behaviors, such as groups following prey too close to shore. Due to their strong social bonds, pilot whales typically move in tightly knit pods, complicating rescue efforts because individuals cannot be moved separately without risking separation from the group.

Rescue operations for beached pilot whales typically require multiple people—often five or six—to assist just one animal, a logistical challenge intensified in remote locations like Sable Island. Despite efforts by marine rescue organizations, the 16 whales on Sable Island did not survive.