 Offshore ecosystems include the Tampa Bay estuary and numerous gulf seagrass beds.The county also maintains several artificial reefs

Numerous bird species can be sighted in Pinellas, either as permanent residents or during the winter migration, including wading birds like great blue herons, egrets, white ibises and roseate spoonbills, aquatic birds like brown pelicans, white pelicans, and cormorants, numerous species of shorebirds, and very-common birds like seagulls and passerines like the blue jay, mockingbird, and crow.Ospreys are a commonly seen bird-of-prey, with other birds of prey like turkey vultures, red tailed hawks, great horned owls, screech owls, barn owls, and bald eagles, among others, seen as well.