The Sharks have signed Bulls lock Wilhelm Steenkamp on loan for the remainder of the Super 14 season.
The 25-year-old, who is the brother of Stormers forward De Kock Steenkamp, will provide cover for Gerhard Mostert and Johan Muller, who were both injured during the opening round of the competition.
Albert van der Berg also left the Durban franchise before the season began and Steenkamp, who has not featured for his Pretoria franchise this season, will be seen as an ideal replacement by coach John Plumtree.
The Paarl Boys High graduate has been capped 19 times for the Bulls in the Super 14 and is currently part of the Emerging Springboks set-up.
"Wilhelm will get playing time at the Sharks, which will not only benefit the player, but South African rugby as a whole," said Bulls high performance manager Ian Schwartz.
"The Sharks is in need of a top-class lock and we have released Wilhelm due to our depth in that position. We have no doubt that he will add value to the Sharks in their campaign."
Last year Steenkamp represented the Emerging Springboks against the British and Irish Lions during a tour match in Cape Town.