Planctae

In Greek mythology, the Planctae (Greek: Πλαγκταὶ, Planktai, "Wanderers"), also known as Wandering Rocks, were a group of rocks, between which the sea was mercilessly violent. The Argo (led by Jason) was the only ship to navigate them successfully (with divine help from Hera, Thetis, and the Nereids). Jason chose to brave the Planctae instead of braving Scylla and Charybdis. In the Odyssey of Homer, the sorceress Circe tells Odysseus of the "Wandering Rocks" or "Roving Rocks" that have only been successfully passed by the Argo when homeward bound. These rocks smash ships and the remaining timbers are scattered by the sea or destroyed by flames. The rocks lie on one of two potential routes to Ithaca; the alternative, which is taken by Odysseus, leads to Scylla and Charybdis. According to Homer, it was Hera, for her love of Jason, who sped the Argo through the Wandering Rocks safely. The rocks also appear on the journey in the Argonautica by Apollonius of Rhodes, who also locates them near Scylla and Charybdis, but beyond them rather than as an alternative route. Apollonius distinguishes between two sets of dangerous rocks, the Symplegades (Clashing Rocks) and the Planctae. The Symplegades were encountered on the way to the Golden Fleece and the Planctae were encountered on the return voyage. Which god or goddess helped the Argonauts safely sail through the Clashing Rocks is unclear in the text. Athena helped in the former task, while Thetis and her sisters the Nereids helped in the latter one. However, the plans to help Jason pass these obstacles were ultimately orchestrated by Hera according to Apollonius, thus agreeing with Homer. The similarities and differences between the Wandering Rocks and the Symplegades has been much debated by scholars, as have potential locations for them. (See also Geography of the...