Cape Cod: 33 of 384 Critically Endangered Right Whales Spotted in One Day

An aerial survey on Jan. 10 recorded 33 North Atlantic right whales in Cape Cod Bay, representing over 8% of the estimated 384 whales worldwide, and researchers reported most were shallow subsurface feeding.

An aerial survey on Jan. 10 documented 33 North Atlantic right whales in Cape Cod Bay, according to the Center for Coastal Studies. The species is estimated at 384 individuals worldwide, which makes the single-day count a notable share of the population. Observers said most whales seen that day were feeding in shallow subsurface positions rather than forming surface active groups. The CCS reported the sighting raises its season total to 54 right whales since surveys began in November, and other researchers reported additional sightings south of Nantucket. Key details: - 33 North Atlantic right whales were recorded in Cape Cod Bay during the Jan. 10 aerial survey by the Center for Coastal Studies. - The estimated global population is 384 individuals, so the Jan. 10 count represents over 8% of the population. - Most animals on the flight were observed engaged in shallow subsurface feeding rather than surface activity. - The CCS said 54 right whales have been observed in the 2025–2026 field season to date; the first group of 10 was seen on Dec. 5. - The New England Aquarium reported 23 right whales in two flights south of Nantucket, which led to a slow zone for boats in that area. - The CCS noted ship strikes are a major threat; vessel speed limits for boats 65 feet and longer (10 knots or less) began Jan. 1 in Cape Cod Bay, additional restrictions for smaller boats and fixed fishing gear take effect Feb. 1, and federal rules prohibit approaching a right whale within 500 yards without a research permit. Summary: The single-day sighting included a significant portion of the small North Atlantic right whale population and drew attention because of the whales' feeding behavior. Existing vessel speed limits are already in place and further restrictions for smaller boats and fishing gear are scheduled to begin Feb. 1, while researchers continue seasonal surveys to monitor sightings and behavior.