Complex sentence: Together with Taylor Slough to the east, Shark River Slough is an essential conduit of overland freshwater to Florida Bay and restoration of the historic function of the slough is essential to restoration of Everglades National Park.
Split into simpler sentences: Together with Taylor Slough to the east, Shark River Slough is an essential conduit of overland freshwater to Florida Bay. Restoration of the historic function of the slough is essential to restoration of Everglades National Park.