Researchers are exposing the secrets of the world’s southernmost mammal, the Weddell seal. These seals, found in Antarctica’s Erebus Bay, live in rapidly changing environments. They can weigh ...

One of the greatest challenges faced by the Antarctic team One of the greatest challenges faced by the Antarctic team of Frozen Planet II was filming Weddell seal mothers teaching their pups to swim.

However, if you listen below the surface, they come alive with the chirps and trills of Weddell seals and the clicks ... to consider their impact on the planet and its creatures.