Farmers wrestle to recapture some 15,000 crocodiles on the loose in South Africa.<br/> <br />They escaped from a crocodile farm near the border with Botswana this week when heavy rains swept through the area, causing flooding.<br/> <br />Workers opened the farm gates out of fear that the rushing water would crush the reptiles.<br/> <br />Only half of the escaped crocodiles have been recaptured in the area, in and around one of southern Africa's biggest rivers, the Limpopo.<br/> <br />One crocodile-- apparently from the farm-- was captured about 120 km away at a school rugby field.<br/> <br />This week, heavy rains and flooding have claimed at least 20 lives in Mozambique and South Africa and led to the evacuations of thousands.