Himilco (flourished 5th century bc) was, like Hanno, a Carthaginian explorer of the 5th century bc, mentioned first by Pliny the Elder (1st century ad). While Hanno explored the coast of Africa, Himilco sailed north from Gades (present-day Cadiz, Spain) for four months. Historians differ on whether he reached Brittany or discovered the Sargasso Sea.