I think I just found the best excursion ever that all the ladies will love - in Cabo San Lucas:
B.O.B UNDERWATER ADVENTURE
Cruise through the translucent waters of Chileno Bay and explore the wondrous world below sea level with help from B.O.B. During your cruise, make your way to Chileno Cove where you will become acquainted with your new friend, B.O.B.
(The description also said what B.O.B. actually stands for in this instance, but of course, my mind instantly went elsewhere.

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