The port of Apollonia was built around two or three natural harbors, which have disappeared beneath the waves in 365 CE, when a giant tidal wave destroyed the coast of northern Africa. It seems that the inner harbor - which was surrounded by quays and store houses - was used for warships, and the outer harbor for merchant ships. In the eastern part were a large mole and a lighthouse. This mole and the outer harbor were built by the Romans; the inner harbor appears to be Greek.
In 1987, a small ship (thirteen meters long) was discovered; the remains are now in the museum of Sousa.