Some of the fastest ocean currents in the world have been discovered off South Africa, Somalia, Kenya, Tanzania and Madagascar. These can be used to generate energy.

A groundbreaking study in the journal Science, has unveiled how deep ocean currents—known as global overturning ...

But sometimes changes in the patterns of winds and ocean currents cause seawater to suddenly cool, instead. Surface temperatures can plummet rapidly — by 10ºC or more over a day or two.

Engineers in South Africa and Mexico are also investigating the potential of ocean current turbine systems.. Which African countries could generate electricity from ocean currents? We've ...