John speaks to wildlife and conservationist De Wet Du Toit about his attempt to swim and from Dyer Island.
The swim has never been done before and he wants to bring awareness to of the decline of the great white shark in South Africa's coastal waters.
Dyer Island is internationally known for the large number of great white sharks it attracts, but in recent years, these numbers have dwindled.

Cape Town Opera takes Porgy and Bess to Europe
05:34

US threatens sanctions against countries that keep economic ties with Iran
05:38

Body cameras could boost police accountability — but who controls the record button?
07:43