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A new study confirms what marine mammal researchers have suspected for a while: right whales use nearly the entire eastern seaboard during the winter, and they move around a lot more than was previously thought. How long they spend in some areas of their range has also changed in recent years. The findings were based on passive acoustic monitoring. Using bottom-mounted listening devices deployed along the coast, researchers can record whale calls 24/7 and obtain new insights into how whales use all habitats. [Source: NOAA Fisheries]
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