Transient Orca Hunting
There were many Transient Orca last week in various waterways and channels. Some pods of Transients were observed hunting and feeding on their prey. Transients feed on marine mammals, such as seals, sea lions, dolphins, and porpoises. When hunting, these Orca do not use echolocation (sounds) to detect the location of their prey. Instead, they need to be stealthy so they can get close to its prey before attacking and catching the prey. In contrast, the Resident Orca do use echolocation to find their prey, which is fish like salmon. A pod of Northern Resident Orca continued to traval around upper Georgia Strait and through various inland waters. Due to the presence of both types of Orca in the area and lack of information, some sightings were classified as Unidentified Orca.
As through most of the summer and September, many Humpback whales were observed in the area last week. Some Humpbacks were seen foraging and lunge-feeding. Lunge feeding is when a whale rapidly approaches an area with a high density of prey (e.g. herring) and the whale opens its mouth to catch a mouthful of its prey. Often, observers are able to see the whale’s head and front half of the body come out of the water as it’s completing its lunge-feed and closing its mouth. Rounding out our report is a few sightings of Pacific White-Sided dolphins, with one pod being over 100 animals seen around Denham Bay. Two Sea Otters were observed in the southern end of Sutil Channel.
Keep your eyes open, report your sightings to us, and use caution on the water giving these animals plenty of room. Remember N.E.W.S. when you see a whale, meaning put your boat in NEUTRAL, ENJOY the view, WAIT till the whales are at a fair distance, and then SLOWLY leave the scene.
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Video: Peter Hamilton, Lifeforce
Peter Hamilton, director of the animal-rights group Lifeforce, was on the boat last Thursday and said the experience with the bus-sized whales was a bit unsettling.
He posted a video of the close encounter on YouTube, and it shows the whales near the boat before one of them leaps into the air and smacks its head on the window as it lands back in the water….
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It estimates there are a million vertical fishing lines in the path of the right whales, with 622,000 in U.S. waters from Georgia to the Gulf of Maine and the remainder in Canadian waters along the Scotian Shelf and in the Gulf of St. Lawrence.
After season free of right whale deaths, DFO looks at economic impact of protection.
The agency said nearly 85 per cent of right whales have been entangled in fishing gear at least once, 59 per cent at least twice, and 26 per cent of the regularly seen animals are entangled annually.
“With a 26-per cent annual entanglement rate in a population of just over 400 animals, this translates to about 100 entanglements per year, which is significant for such a small population,” the report states….
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Research and Image, Jared Towers
BC-based marine researcher Jared Towers witnessed a tagged killer whale diving 3,566 feet to snag some toothfish off a long commercial fishing line. More than 60 killer whales and 40 sperm whales were studied, though just one of each was tagged because whales aren’t particularly cooperative, said Towers….
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Their speed is not just limited to swimming, but also to their life in general! In fact, at no more than 20 years, porpoises have the shortest life expectancy of any of the whales in the St. Lawrence. Thus there is one motivation that predominates for both sexes: to reproduce! For males, the strategy consists of competition by means of sperm. Their goal: to produce more sperm in order to inseminate several females or the same female multiple times….
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Fournet, who contributed to the paper while she was a research assistant at Oregon State University, tells Inverse that "it has taken multiple generations of scientists to describe what multiple generations of whales have been talking about."…
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