Heavy metals from pollution threaten sperm whales with extinction: “US scientists who spent five years sampling the tissue of nearly 1000 sperm whales discovered surprisingly high levels of toxic heavy metals in the animals, a report shows. The levels of cadmium, aluminum, chromium, lead, silver, mercury and titanium together are the highest ever found in marine mammals, the scientists say, warning that the health of both ocean life and people who eat seafood could be at risk. Analysis of cells from the sperm whales showed pollution is reaching the farthest corners of the oceans, from deep in the polar regions to ”the middle of nowhere” in the equatorial regions, the biologist Roger Payne, founder and president of Ocean Alliance, which conducted the research, said.”
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