By Ocean-birth_hg.png: Hannes Grobe, Alfred Wegener Institute for Polar and Marine Research, vectorised by User:Lichtspielderivative work: Lichtspiel (Ocean-birth_hg.png) [CC BY-SA 2.5], via Wikimedia Commons
By Ocean-birth_hg.png: Hannes Grobe, Alfred Wegener Institute for Polar and Marine Research, vectorised by User:Lichtspielderivative work: Lichtspiel (Ocean-birth_hg.png) [CC BY-SA 2.5], via Wikimedia Commons