Kholofelo Sethebe never learned to swim. Now, as a marine biologist, she braves the open seas to swim with seals. Kholofelo Sethebe was first drawn to the sea as a child, on a visit to Cape Town from her landlocked home province in South Africa. But traditional fears of the ocean were deep, so it is only now, as a qualified marine biologist, that she is teaching herself to swim.