November 30, 2018 — A group of 17 North Atlantic right whales was spotted by an aerial survey team 21 miles south of Nantucket early this week, prompting a renewed call for voluntary speed restrictions among mariners and also renewed concern for the future of the critically endangered mammals.
In response to the whale sighting early Monday, the National Oceanic and Atmospheric Administration (NOAA) has instituted a voluntary vessel speed restriction zone, also known as a DMA, or dynamic management area, that encompasses Nantucket and extends to the southeastern coast of Martha’s Vineyard and Chappaquiddick. Boaters are asked to limit their speed to 10 knots or less when sailing through the area, which spans latitudinally from 40 degrees, 28 minutes north to 41 degrees, 22 minutes north, and longitudinally from 70 degrees, 39 minutes west to 69 degrees, 29 minutes west. Overall, the rectangular area encompasses approximately 360 square nautical miles.
With only about 400 whales remaining, the North Atlantic right whale is one of the rarest marine mammals in the world. The whales are known to appear around Cape Cod and the Islands around this time of year, fattening up on zooplankton before heading south to breed. Two weeks ago, NOAA reported a sighting of four right whales in a similar location off Nantucket’s south shore. But 17 is an entirely different story.
“That’s a lot of whales,” said Jennifer Goebel, a spokesman for NOAA, speaking to the Gazette Tuesday. “Usually when we set up these dynamic management areas we can do it on anything over three, sometimes four, maybe five. This was 17, so that tells you.”