Hollis Clark Bay Seaplane Base (IATA: HYL, ICAO: HYL) is a public seaplane base located in Hollis, Alaska, on the southeastern shore of Prince of Wales Island in the Alexander Archipelago. The facility serves as a vital air access point for a community not connected to the main Alaska road network by ferry or road to the broader state highway system. The base supports small floatplane and seaplane operations typical of rural Southeast Alaska, providing essential transportation links for residents, workers, and visitors traveling between Hollis and communities such as Ketchikan. Air taxi services operating floatplanes are the primary users of the facility. Hollis itself is notable as the terminus of the Alaska Marine Highway ferry route from Ketchikan, making the combination of ferry and air access the main means of reaching Prince of Wales Island. The seaplane base complements this by offering faster, more flexible air connections.