19 Oct '17, 9pm

Oil spills pose unacceptable threats to marine life

Oil spills pose unacceptable threats to marine life

After examining potential impacts of a 15,000-cubic-metre oil spill in B.C. waters on 21 marine mammals, researchers concluded most individuals would be at risk and a few local populations wouldn't survive. Baleen whales, for example, are highly susceptible to ingesting oil because they breathe through blowholes, filter and eat food from the ocean surface and rely on invertebrate prey. Oil residue can stick to the baleen, restricting the amount of food they consume. Resident and transient killer whales, sea otters and Steller sea lions were most likely to see a drop in population levels from an oil spill. Killer whales are especially vulnerable because of their small populations, low reproductive rates, dietary specialization, long lives and complex social structure. The 76 southern resident killer whales off the B.C. coast, Canada's most endangered marine mammal, are part...

Full article: http://www.davidsuzuki.org/blogs/science-matters/2017/10/...

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