Sanmarie Woithe
From Openwaterpedia

Ralph West, Brenton Williams, JC van Wyk, Greg Tucker, Russell Tucker and Sanmarie Woithe, world record holders
Sanmarie Woithe is an open water swimmer and a record holder along with Brenton Williams, Ralph West, JC van Wyk, Greg Tucker, and Russell Tucker for setting a new record of 350 km for a continual open water swimming relay in the Marina Martinique in Jeffreys Bay, South Africa in 21-25 March 2012.