Serena and Venus Williams are taking their new Hollywood shine in stride -- and that stride led them straight to the Caribbean.
The Williams family was in the Bahamas this weekend, with several folks from their brood in tow -- including their mom, Oracene, Serena's husband, Alexis Ohanian, and their daughter, Olympia.
We're told they came in by yacht and docked at the Staniel Cay Yacht Club -- where they took part in some neat sightseeing... including shark petting nearby.