For thousands of years, coastal and estuarine environments have provided people with food, safe harbors, transportation access, flood control, and a place to play and relax. The pressures on the nation's coast are enormous and the impacts on economies and ecosystems are becoming increasingly evident. Severe storms, climate change, pollution, habitat alteration and rapid population growth threaten the ecological functions that have supported coastal communities throughout history. Estuaries are the connection between the ocean (or Great Lakes) and the land and humans depend on both for their very existence, so caring for both – and the connection between them – is vital to humans.