In recent decades, sea ice has been shrinking faster than ever—cutting into the algae supply that polar bears rely on for their diet https://on.natgeo.com/2Icd0QP

In recent decades, sea ice has been shrinking faster than ever—cutting into the algae supply that polar bears rely on for their diet https://on.natgeo.com/2Icd0QP 

https://twitter.com/NatGeoTravel/status/1113395747888816131