NOAA Fisheries announces an extension to a voluntary right whale Slow Zone South of Nantucket. On August 25, 2021, the New England Aquarium aerial survey team sighted the presence of right whales south of Nantucket, MA. The Slow Zone is extended immediately through September 9, 2021. Reminder there is another Slow Zone in effect Southeast of Nantucket through August 31. Please visit www.nmfs.noaa.gov/pr/shipstrike for coordinates of all current Slow Zones.
Extension of VOLUNTARY Right whale "SLOW Zone"
Mariners are requested to continue to avoid or transit at 10 knots or less inside the following areas where persistent aggregations of right whales have been detected.
Slow Zone Coordinates
South of Nantucket Island, MA (EXTENSION)
41 24 N
40 40 N
069 32 W
070 30 W
Southeast of Nantucket Island, MA
41 05 N
40 26 N
069 11 W
070 04 W
Give Right Whales Room
North Atlantic right whales are on the move along the Atlantic coast of the U.S. NOAA is cautioning boaters and fishermen to give these endangered whales plenty of room. We are also asking all fishermen to be vigilant when maneuvering to avoid accidental collisions with whales and remove unused gear from the ocean to help avoid entanglements. Commercial fishermen should use vertical lines with required markings, weak links, and breaking strengths.
Right Whales in Trouble
North Atlantic right whales are protected under the U.S. Endangered Species Act and the Marine Mammal Protection Act. Scientists estimate there are only about 400 remaining, making them one of the rarest marine mammals in the world.
North Atlantic right whales are NOAA Fisheries' newest Species in the Spotlight. This initiative is a concerted, agency-wide effort to spotlight and save marine species that are among the most at risk of extinction in the near future.
In August 2017, NOAA Fisheries declared the increase in right whale mortalities an “Unusual Mortality Event,” which helps the agency direct additional scientific and financial resources to investigating, understanding, and reducing the mortalities in partnership with the Marine Mammal Stranding Network, Canada’s Department of Fisheries and Oceans, and outside experts from the scientific research community.
More Information
Recent right whale sightings
Find out more about our right whale conservation efforts and the researchers behind those efforts.
Download the Whale Alert app for iPad and iPhone
Acoustic detections in Cape Cod Bay and the Boston TSS, as well as other regions along the eastern seaboard.
Details and graphics of all vessel strike management zones currently in effect.
Reminder: Approaching a right whale closer than 500 yards is a violation of federal and state law.
Spread the Word!
All boaters, or interested parties, can sign up for email notifications and selecting "Right Whale Slow Zones" under the Regional New England/Mid-Atlantic subscription topics. You can also follow us on Facebook (@NOAAFisheriesNEMA) and Twitter (@NOAAFish_GARFO) for announcements.
Watch our video on Right Whale Slow Zones.
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