Extreme diver Norbert Wu's Journey into the Antarctic underworld: Showing a medusa or jelly (Desmonema glaciale). It lives near the surface and the bell can reach over one meter in diameter. It is incredibly intricate and beautiful though.
Russian biologist Alexander Semenov graduated in 2007 from Moscow State University’s zoology department where he studied invertebrate animals. Specifically: squid brains. Now he works as the chief of his diving team at the White Sea Biological Station, camera always in-hand, where he’s captured some of these extraordinary photographs of jellyfish and other wildlife.