By Christopher Dunagan
February 20, 2015
While J pod continues to hang out in the Salish Sea, NOAA’s research cruise has shifted its focus to K and L pods, which have worked their way south along the Washington Coast to beyond the Columbia River.
(The newest calf in J pod, J-51, swims with its mother J-19, a 36-year-old female named Shachi. // NOAA photo)
If you recall, a research team led by Brad Hanson of NOAA’s Northwest Fisheries Science Center left Newport, Ore., on Feb. 11 aboard the vessel Bell M. Shimada. Homing in on a satellite tag attached to J-27 (named Blackberry), the ship met up with J pod two days later near Canada’s Texada Island in the Strait of Georgia.
The researchers were able to collect scales from fish killed by the whales to determine what kind of fish they were eating. It was the first time that a sample of this kind has been collected outside of Puget Sound during the month of February, Brad reported.
The ship stayed with J pod and its two new babies as they moved around in the general area of Texada Island. Then last Sunday the satellite tag came off J-27, as it was designed to do after a period of time. Hanson was pleased that the tag had stayed on so long, allowing researchers to track six weeks of travels by J pod, which had never been tracked that extensively before.
Together with tracking data from 2012 and 2014, this year’s work helps to characterize the movements of J pod, according to notes from the cruise:
“Collectively, these data indicate only limited use of the outer coastal waters by J pod. In 2014 NMFS was petitioned to designate Critical Habitat on the outer coastal waters of Washington, Oregon, and California. The data used for this petition was derived from only one sample — the range of K25 during the January to March 2013 satellite tag deployment. Consequently, potential variability between pods and between years has led to making tagging a whale from L pod a high priority.”
Prompted by a sighting of K and L pods off Sooke, B.C., at the south end of Vancouver Island, the research ship headed into the Strait of Juan de Fuca and intercepted the two pods Monday afternoon near the entrance to the Strait. The ship tracked the whales acoustically through the night with its hydrophone array.
The next day, the crew took to the water in its small boat and attached a satellite tag to L-84, a 25-year-old male named Nyssa. The researchers also were able to collect some scales from fish that the whales had eaten. Leaving the Strait of Juan de Fuca, K and L pods turned south after entering the Pacific Ocean. Again, from the cruise notes:
“By being able to deploy a tag on L pod while on our cruise on the Bell M. Shimada, we have the unique opportunity to now be able to follow the whales each day (and potentially at night) and collect prey and fecal samples as well as other data about their environment this time of the year.
“While we know that K and L pods sometimes co-occur in the winter, this will potentially be an opportunity to see the degree to which they remain together. We are off to an exciting start — four prey samples yesterday (Tuesday) and four fecal samples today (Wednesday) while the whales transited from near Cape Ozette … to near Willipa Bay.”
Those are the last notes available, either on NOAA’s tagging webpage or on NOAA’s Facebook page. I’ve been in touch by email with Brad, but his latest message had nothing new since Wednesday.
By tracking the Shimada on the Marine Traffic website, I understand that the whales paused outside of Grays Harbor and again near the mouth of the Columbia River. As if this afternoon, they had moved south of Tillamook Bay and Cape Meares in Oregon and were continuing on south.
Meanwhile, J pod apparently remains in the Salish Sea, which includes inland waterways on both sides of the U.S.-Canada border. As of yesterday, the pod was seen in Active Pass in the Gulf Islands of British Columbia, north of Washington’s San Juan Islands.
Both of the new calves in J pod — J-50 and J-51 — seem to be doing fine, according to naturalist Heather MacIntyre, quoted in the San Juan Islander. J-50, a female, was born just days before the end of the year, while J-51, gender unknown, was born about two weeks ago.
For previous reports on the whales, see Water Ways for Feb. 12 as well as a previous post on Jan. 22. A report on the research cruise can be found in Water Ways on Feb. 10.