PETER SCOONES / SCIENCE PHOTO LIBRARY PETER SCOONES / SCIENCE PHOTO LIBRARY
Male southern elephant seal (Mirounga leonina) roaring. Mature bulls produce this guttural growl to challenge other males during dominance battles. The facial proboscis resonates the sound, helping to assert the bull's masculinity. Photographed on South Georgia Island in the South Atlantic Ocean.
Model release not required. Property release not required.