Although the plunge for distance event is no longer on the Olympic program, it is contested daily in the animal kingdom. Able to hold its breath for nearly two hours, the sperm whale is the oceans deepest diver - making plunging descents of more than 3 kilometres. Second placed deep diver is the elephant seal. Reaching depths of 1500 metres it can stay submerged for 2 hours. Third ranking deep diver is the Weddel seal, reaching depths of 700 metres. It dives continually for about eleven hours but must spend up to thirteen hours. Show Less >>