After a cagey opening quarter, the visitors from Durban ran in three quickfire tires from prop Fez Mbatha, scrumhalf Cameron Wright and winger Yaw Penxe to take the opening half 28-10.
But shortly after the second-half whistle, flanker Stephan Smit started a five-try run for the home side, whose backline showed great flair. Janco Uys' try in the 74th minute sealed the deal for the home side, while Sharks' workhorse Dylan Richardson bagged a late brace of tries to add some respectability to the scoreline.
For the GriquasTries: Penalty try, Smit, Obi, Sirgel, Mulder, UysPens: Dobela 2Cons: Dobela 5
For the SharksTries: Venter, Mbatha, Wright, Penxe, Richardson 2 Cons: Zeilinga 4, Cronje 1
Meanwhile, the Cheetahs enjoyed a bright afternoon at the Griffons in Welkom, punishing the hosts 52-12 on Sunday afternoon.
Three tries from hooker Marko Janse van Rensburg, flank Friedle Olivier and wing Munier Hartzenberg saw the Cheetahs race to a 19-3 lead after just 18 minutes. This was aided by Michael Benadie's yellow card in the opening ten minutes.
But it only got worst for the Griffions, as the visitors turned up the intensity to run in three more tries, all converted by former Springbok scrumhalf Ruan Pienaar, before the break, which saw them trailing 40-6.
In the second stanza, the Cheetahs cleared their bench while the Griffons slowed the game down as much as possible. Nonetheless, Hartzenberg would cross the whitewash for his fourth try before Cohen Jasper scored in the dying embers. of the one-sided affair.
For the GriffonsPens: Juries 4
For the CheetahsTries: Janse van Rensburg, Olivier, Hartzenberg 4, Sekekete, JasperCons: Pienaar 5, Fortuin