Marinelli Creek is a watercourse whose headwaters emerge from the melting of Marinelli Glacier in Tierra del Fuego, Chile. Marinelli Creek discharges to Ainsworth Bay, a notable inlet along the Almirantazgo Fjord. The Marinelli Glacier has been in a state of retreat since at least 1943,[1] and the retreat continues to the present time of 2008.[2]