RedactedNarrative: Single vessel boating accident occured 5/4/2018. Vessel involved is a 20 foot Pontoon Deck Boat. The vessel was returning to a private residence from Anclote Key Preserve, Pasco County, when it began taking on water. Vessel sank with 9 people on board. Prior to sinking the vessel began listing to the port side. Bilge pumps were manually turned on, but could not keep up. All occupants were picked up out of the water by a good samaritan. No injuries were reported.