Black rhino
Conservation efforts lead to rise in black rhino numbers
The International Union for Conservation of Nature report that black rhino numbers have risen from about 2,000 in the 1990s to the current level of 5,600.
Most of the relocated rhinos died from stress and salt poisoning as a result of drinking water with a high salt content.
The animals, from the Eastern Cape's Addo Elephant National Park, left for the central African country on Thursday.
An American big game hunter has paid $350,000 for a licence to shoot and kill an endangered black rhino in Namibia in a bid to save the species.
Education for Nature is visiting the Kruger National Park in order to educate the Vietnamese public.
Eight other suspects were arrested at a game farm in Limpopo.
Bavaria Breweries and five major local retailers collected the money over the past few months.
The license allows for the killing of a single, post-breeding bull, with Namibian wildlife officials on hand.