Once on board, the Obama's played tourists, posing romantically on the upper deck while they had their photograph taken.
Michelle, 53, showed off her world renowned physique in a pair of white shorts and a black tank top. She let her usually coiffed hair fall wildly at her shoulders, elegantly slinging a brown handbag over one arm as she posed with her husband.
The former president was equally laid back in his attire. He sported a pale blue shirt and some beige pants, adding a pair of sunglasses to his off-duty look.
Oprah stood out in a bright yellow day dress. The stunning results of her recent weight loss were on full display as she stood side on snapping photographs of her famous friends.
The former president was also seen taking photographs of Michelle as she posed alone.