Top: © Mikkel Ostergaard / ​ Panos Pictures; middle: © Steven Kazlowski / ​ SeaPics.com; bottom: © Tim Dirven / ​ Panos Pictures
Top: © Mikkel Ostergaard / Panos Pictures; middle: © Steven Kazlowski / ​ SeaPics.com; bottom: © Tim Dirven / ​ Panos Pictures