Mystery orcas from afar thrill Seattle-area whale watchers

Three thriller whales have been stunning whale watchers from Canada to Olympia.

When any person will get the fun of seeing an orca in Northwest waters, that whale is sort of at all times well-known. Scientists have most likely given it a quantity and documented its household tree, maybe even its DNA. Whale lovers have most likely given it a cutesy identify, like Yoda or Kelp.

But on March 6, a trio of orcas confirmed up in Canada’s busy Vancouver Harbour, later heading south to Seattle, Tacoma, and Olympia, that have been a thriller to scientists.

For many years, researchers have compiled photographic catalogs of primarily all of the orcas of the Pacific Northwest, together with the endangered southern resident killer whales and the extra considerable, mammal-eating Bigg’s killer whales, often known as transients.

Photos taken in the course of the 4 days that the trio of whales spent in a busy harbor bounded by Vancouver’s Lions Gate and Trans-Canada Highway bridges confirmed these have been Bigg’s killer whales, however they matched not one of the whales within the catalogs.

“We couldn’t place these individuals,” stated Jared Towers, head of Bay Cetology, a whale-research group primarily based in Alert Bay, British Columbia. “At first, the photos weren’t great quality, but from what we could see, these whales were new. It took a few days, but when we finally got good photos, we were able to confirm that they were indeed new whales for the region.”

Towers stated it was very uncommon for a brand new orca to be noticed anyplace in British Columbia.

“In the Salish Sea, it’s absolutely unheard of,” he added.

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Higher-quality pictures revealed the trio had extremely uncommon, round markings, in regards to the measurement of a big chocolate-chip cookie.

“One of the things that was really notable were these circular scars, which are remnants from cookie-cutter shark bites,” stated Gary Sutton, a whale researcher with the Vancouver-based nonprofit Ocean Wise.

Cookie-cutter sharks dwell removed from land within the deep, open ocean, often in a lot hotter waters, sometimes south of Hawaii. The small sharks, generally known as cigar sharks, spend their days 3,000 ft or extra underwater and have undersides that glow inexperienced within the ocean depths. They rise nearer to the floor at night time.

How this tiny shark feeds could be its most uncommon attribute: It latches onto a lot bigger prey with sucking lips and sharp tooth, then spins its physique to take away a cookie-shaped plug of flesh from its sufferer.

“They’re micro-predators, like a horsefly or something,” Towers stated.

All three of the orcas, a feminine and two youthful males, had scars indicating they’d hung out in cookie-cutter shark nation.

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Word and pictures of Vancouver’s thriller orcas reached marine biologist Emma Luck in Alaska. A yr earlier, she had been alerted to a trio of thriller orcas in Turnagain Arm close to Anchorage. Orcas are pretty frequent in Alaska however uncommon close to Anchorage.

“Apparently, the whole of Anchorage had received the same news, because cars were packed into every available inch of highway pullouts and shoulders,” Luck said on Facebook. “People climbed on top of their vehicles, trying to catch sight of the three black dorsal fins cutting through the water.”

The Anchorage trio had by no means been documented earlier than or since.

When Luck noticed pictures of the Vancouver trio, one thing clicked.

“To my astonishment, I recognized them immediately: they were our Anchorage whales,” Luck stated.

“They have been spending time in the tropics, occasionally, and obviously, they’ve been seen up in Alaska, so they’re moving around a lot,” Towers stated.

The well-traveled trio apparently left Canada on Monday and swam to Seattle, even getting into the closely industrial Duwamish Waterway earlier than persevering with south to Tacoma and Olympia.

“It was almost a year ago that these animals were seen up in the biggest city in Alaska, and the next time they were seen was the biggest city in British Columbia, of course, followed up by the biggest city in Washington State,” Sutton stated. “So, these guys are on a little city slicker tour.”

An underwater microphone on the Highline College aquarium in Des Moines captured their calls as they swam into south Puget Sound on Wednesday.

It stays unclear which inhabitants of killer whales the thriller trio belong to. Bay Cetology has given them numbers: T419, T420, and T421, whereas California-based researchers with the Oceanic Research Alliance have given them competing monikers: OCX085, OCX086, and OCX087.

“My best guess is that they are either poorly documented Gulf of Alaska Bigg’s killer whales or perhaps far-flung visitors from the Aleutian Islands or Bering Sea,” Luck stated.

The trio was noticed searching seals on the Port of Olympia on Thursday.

Why these ocean-roaming predators have been searching in such city waters as an alternative of their traditional haunts is anybody’s guess.