The Sharks have announced the signing of Bulls lock Ruben van Heerden on a three-year deal.
Confirming his signing, the Sharks head coach Robert du Preez said: "Ruben is a talented young lock and a great acquisition for the Sharks.
"He is a natural athlete and has all the attributes needed to be a great lock. We welcome him to our Sharks family."
Van Heerden was included in the SA squad for the Junior World Cup and made his Super Rugby debut against the Southern Kings.
The Sharks next Currie Cup fixture will be on Saturday, September 22 when they host the Golden Lions at Kings Park.