This marine park is located on the southern end of Esther Island, including Lake and Quillian Bays. Lake Bay houses one of the world's largest fish hatcheries while Quillian Bay remains relatively undisturbed. Quillian Bay provides anchorages behind the larger island. You can also carefully navigate to the head of the bay for an anchorage. A hike along the eastern edge of the lagoon and through a low, forested pass brings you to Esther Lake. Tent platforms provide a flat & elevated surface to camp along the muskegs and forested areas.

The park offers not only a protected anchorage but two easily accessible scenic overlooks. Esther Lake and the Esther Falls Overlook are two of the outstanding features of the Lake Bay area. Fishing is good but sport fishermen should avoid getting in the way of the daily operations of the hatchery. Sport fish regulations prohibit fishing within 300 feet of the holding pens. During commercial openings the fishing fleet crowds the area and you are advised to stay clear of the nets and boat traffic. During the height of the fish run, black bears can be seen near the hatchery.