not have been far off the mark. Otherworld and craft The sea - at once barren and prosperity-bringing, loomed large and ambivalently in the Greek mind. Aside from the ebb and flow of piracy, sea-travel was fraught with superhuman hazard and uncertainty until the Industrial Revolution. It is impossible to assess the spiritual crisis in Aegean culture's relations with the sea's dangers and the capacity of its divinities that must have been engendered by the tsunamis that accompanied the volcanic explosion and collapse of Thera, ca. 1650 – 1600 BCE. It seems unlikely that the sea and its deities have survived the cataclysm unchanged? The sea could therefore stand as a powerful symbol of the unknown and otherworldly. Although many people thought about the sea and her depths, no one would enter the watery grave. Thus Cape Tanaerum, the point at which mainland Greece juts most sharply into the Mediterranean, was at once an important sailor's landmark, a shrine of Poseidon, and the point at which Orpheus and Heracles were said to have entered Hades. This motif is apparent in the paradoxical festivals of the shadowy sea-deity Leucothea ("white goddess"), celebrated in many cities throughout the Greek world. Identifying her with the drowned heroine Ino, worshippers would offer sacrifice while engaged in frenzied mourning. The philosopher Xenophanes once remarked that if Leucothea were a goddess, one should not lament her; if she were mortal, one should not sacrifice to her. At the same time, man's (always partial) mastery over the dangerous sea was one of the most potent marks of human skill and achievement. This theme is exemplified in the second choral ode of Sophocles's Antigone: Wonders are many, and none is more wonderful than man. This power spans the sea, even when it surges white before the gales of the south-wind, and makes a path under swells that threaten to engulf him. (lines 332-338) Certain water divinities are thus intimately bound up with the practice of human skill. The Telchines, for example, were a class of half-human, half-fish or dolphin water daemons said to have been the first inhabitants of Rhodes. These beings were at once revered for their metalwork and reviled for their death-dealing power of the evil eye. In Aeschylus's Prometheus Bound, the imprisoned craftsman is aided by the daughters of Ocean; and Hephaestus had his forge on "sea-girt Lemnos". The nexus of sea, otherworld and craft