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Whales have a
surprising and
important job,
says marine
biologist Asha de
Vos: these massive
creatures are
ecosystem
engineers, keeping
the oceans hea
(more)
Whales have a surprising and important job, says marine biologist Asha de Vos: these massive creatures are ecosystem engineers, keeping the oceans healthy and stable by ... well, by pooping, for a start. Learn from de Vos, a TED Fellow, about the undervalued work that whales do to help maintain the stability and health of our seas -- and our planet.