Right Whale Calf Confirmed in 2025-2026 Season
Researchers identified a previously undetected North Atlantic right whale calf born to the mother Silt, raising the season's total to 24 calves.
Updated on Nov. 7, 2026 in Environmental
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Researchers confirmed a previously undetected right whale calf born to mother Silt during the 2025-2026 calving season. The discovery raises the season's total to 24 calves, the second-highest in two decades.
Why it matters
North Atlantic right whales number about 380 individuals and are threatened by vessel strikes and entanglement in fishing gear. Each confirmed calf adds to a population that remains highly vulnerable.
Researchers tallied 23 mother-calf pairs at the end of spring 2026, and the newly confirmed calf brings the total to 24 calves, second only to 39 calves recorded in 2009. The source does not confirm whether the calf has survived beyond its first sightings.
The players
New England Aquarium
The New England Aquarium is a Boston-based institution that maintains the North Atlantic Right Whale Catalog used to identify individual whales.
Georgia Department of Natural Resources
The Georgia Department of Natural Resources oversees the state's coastal wildlife and runs the right whale survey team that studies calving grounds off the coast.
The details
Researchers captured images of a calf with its mother near Anticosti Island, Quebec, in late September and matched the mother to Silt (Catalog #1817) in the New England Aquarium's catalog. Silt is at least 38 years old, has given birth to six known calves, and has been entangled at least five times; her last calf, Division, died after a serious entanglement in lobster fishing gear.
Timeline
2005: Calf #2617 died after being struck by a vessel.
2009: 39 calves were recorded in a single season.
Late September 2026: Calf with mother photographed near Anticosti Island, Quebec.
Dec. 1: Georgia DNR begins right whale surveys.
Big Picture
The New England Aquarium's North Atlantic Right Whale Catalog has tracked individual whales for decades, and this confirmation extends that record of Silt's six known calves. The 24-calf season sits just below the 39 calves recorded in 2009, a benchmark that frames how far the population has to recover.
Vessel operators and fishers in right whale habitat face rules and technology that aim to reduce strikes and entanglements. The Georgia DNR team's testing of thermal imaging to help ships avoid whales could influence how mariners navigate these waters.
The takeaway
Each new calf matters for a species of roughly 380 individuals, and vessel slowdowns and gear changes remain the main tools for reducing deaths. Keeping track of individual whales through photo-identification is how researchers measure whether those efforts are working.
What happens next
Georgia DNR begins right whale surveys on Dec. 1, and its team will test infrared and thermal imaging technology to help vessels avoid whales.
Further reading
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Source note: This article includes information reported by The Current.
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