Big Bunsby Marine Provincial Park was established to focus recreation use away from the adjacent Checleset Bay Ecological Reserve, located on the west side of Gay Passage. Accessible only by boat, this marine park offers sheltered anchorages and excellent sea kayaking opportunities. Big Bunsby, the largest of the Bunsby group of islands, is also a good place for nature viewing—gray whales, Bald eagles and the endangered sea otter all reside in the area.

Low tides create tide pools that offer great opportunities for visitors to observe the local inter-tidal marine life. Please look but do not touch when viewing this sensitive environment.

Although there are no developed campsites at this park, boaters and kayakers seeking a wilderness experience will find plenty of places to set up camp on Big Bunsby.