Bruce Mate has been studying whales for close to four decades and recently tracked the longest mammal migration on record. In the 1970s, he pioneered the technology that made this sort of tracking possible.
Mate is based at the Oregon State University Hatfield Marine Science Center, but his work has taken him all over the world, following gray whales as well as blue whales — the largest mammals that have ever lived.
We talk to Bruce Mate about his life's work with whales.
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