Gabriel Rojo / Southern Right whale (Eubalaena australis) breaching, Peninsula Valdes, Chubut, Patagonia, Argentina.

Chris & Monique Fallows / Southern right whale (Eubalaena australis) breaching, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Southern right whale (Eubalaena australis) spyhopping, False Bay, Cape Town, South Africa.

Chris & Monique Fallows / Southern right whale (Eubalaena australis) close up feeding on plankton at surface, False Bay, Cape Town, South Africa; with barnacles on head

Tony Wu / Whale louse (Cyamus ovalis) on a Southern right whale (Eubalaena australis) South Africa. Photographed with the permission of the Department of Environmental Affairs, South Africa.

Tony Wu / Whale louse (Cyamus ovalis) on hand to show scale, came from a Southern right whale (Eubalaena australis) South Africa. Photographed with the permission of the Department of Environmental Affairs, Sou...

Tony Wu / Southern right whale (Eubalaena australis) lifting a pectoral fin out of the water near shore, photographed with the permission of the Department of Environmental Affairs, South Africa, August

Tony Wu / Southern right whale (Eubalaena australis) fluke marked by injuries that appear to be the result of a propellor strike from a boat traveling at high speed, photographed with the permission of the Depa...

Tony Wu / Southern right whale (Eubalaena australis) inquisitive adult approaching to observe diver, note the callosity above the whales eye, which is populated by other organisms, including whale lice (Cyamus...

Tony Wu / Southern right whale (Eubalaena australis) at surface showing callosity on head with huge number of Whale lice (Cyamus ovalis) amongst other organisms, photographed with the permission of the Departme...

Tony Wu / Southern right whale (Eubalaena australis) calf resting its head on top of its mother, already with Whale lice (Cyamus ovalis) on its skin, photographed with the permission of the Department of Enviro...

Tony Wu / Southern right whale (Eubalaena australis) looking down on calf's head showing the development of callosities with whale lice (Cyamis ovalis) photographed with the permission of the Department of Envi...