The Floating Pool, the four-foot-deep pool-on-a-barge that'll be anchored off Brooklyn Heights for the summer, welcomes the public tomorrow. But opening-day celebrations were held today, as notables including Parks Commish Adrian Benepe, City Council Speaker Christine Quinn, and — of course — Brooklyn Borough President Marty Markowitz all took dips, as did 9-year-old Nayhira Baird. The barge also features a beach, volleyball courts, and space for sunbathing — plus, we must say, a pretty awesome view.

Related: Floating Pool’s Opening Signals Start of Brooklyn Bridge Park [Brooklyn Daily Eagle]