[4] The Seattle Audubon Society has compiled a checklist of 270 species of birds seen in the park and nearby waters.

[5] Elliott and Shilshole Bays are home to harbor seals and California sea lions, while the wooded areas support Townsend's chipmunks.

Most visitors enjoy hiking the Loop Trail, which forms a circuit through forest, meadow, and shrub habitats around the upland portion of the park, and provides excellent views of Puget Sound.

Free permits can be obtained at the Environmental Learning Center in the East Parking Lot and are designated for qualified individuals only (groups with children 7 and under, seniors 62+, and people with a physical disability).

Coniferous forest is mostly to be found in the north bluff region and can be accessed from the road that leads to the beach.

[6] Invasive species such as Himalayan blackberry, Scot's broom, English ivy, and holly are present throughout, requiring active on-going management to suppress.

[12] As of March 2009, the King County Superior Court Judge ordered the city to comply with the State Environmental Policy Act (SEPA) process.

[14] In September 2010, the U.S Department of Housing and Urban Development (HUD) approved October 10, 2008 Proposed Redevelopment Plan and Homeless Assistance Application for the US Army Ft. Lawton Complex.

[20] The Grunge band Temple of the Dog filmed the music video for their hit single "Hunger Strike" on the shores of Discovery Park.