Briton swims Antarctic in campaign for three marine sanctuaries

Endurance swimmer Lewis Pugh employs 'Speedo diplomacy' to stop overfishing in Antarctic

A British man will plunge into sub-zero waters in the Antarctic on Tuesday to campaign for the creation of three huge marine parks to stop overfishing.

Lewis Pugh is credited with playing an important role in the agreement earlier this year to create the world's largest marine protected area (MPA) and make fishing off limits in much of the Ross Sea, a bay in the Southern Ocean.