Horn Island Pass is a significant tidal pass located in the Mississippi Sound, separating Horn Island from Petit Bois Island off the coast of Jackson County. This dynamic saltwater environment connects the protected waters of the sound with the open Gulf of Mexico, creating a major conduit for tidal flow and fish movement. The pass is adjacent to the federally maintained Pascagoula Ship Channel, which sees significant commercial vessel traffic. The surrounding waters are part of the Gulf Islands National Seashore, offering a wilderness fishing experience characterized by clear Gulf waters on the south side and shallower, often murkier sound waters on the north. The area is renowned for its diverse inshore and nearshore fishery, with structure provided by the natural sand composition of the pass and the adjacent islands.