A whale's journey is stored in a barnacle shell


Today’s Video of the Day from the National Science Foundation describes how barnacle shells are providing researchers at UC Berkeley with new insight into the lives of humpback and gray whales.

As the sticky barnacles hitch rides on the backs of the whales, their shells record details about the whales’ journey in the form of oxygen isotopes. This record is retained up until the barnacles become fossilized.

Experts can use the information to better understand how whales have responded to climate change in the past.

By Chrissy Sexton, Earth.com Staff Writer

Video Credit: National Science Foundation

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