Southern Right whales, like other species of whales, have a behavior known as "Whale Hopping" The reasons that cause this jump are different from our human interpretation, scientists argue that the whale jumps because it is a form of communication with other whales, and you can see it here in Valdes Peninsula in Patagonia Argentina. Another reason could be to try to see out of the water, perhaps just shapes and distances; with eyes adapted to see under the salt water would be very unlikely to see the objects defined on the surface.
There are other likely reasons causing the leap of the whale, one of them is tiny, crab-shaped and is a small crustacean called ciamids, they live in group and becoming dozens of walking ciamids through the skin and calluses of whale. Sometimes these crabs walk on delicate areas such as the corner of the eye, creating a major nuisance. With the fall after a jump on the water surface the ciamid is released and stop bothering the whale.
Also seagulls in recent years developed a technique to eat the skin and fat pecking the back whales, may cause the whale to jump in order to get out something that must be like a horsefly or mosquito for us, a tiny but intolerable.
The important thing, beyond why the whale leaps, is being able to see this amazing marine mammal more than 40 tons out 10 meters out of the water, only with the strength of their tail or caudal fin.