"Your mother, when she heard the tidings, came up from the sea with the immortal Sea-Nymphs"

Thetis gives her son Achilles his shield forged by Hephaestus, detail of a black-figure hydria, ca.575 BC–50 BC
Public DomainThetis gives her son Achilles his shield forged by Hephaestus, detail of a black-figure hydria, ca.575 BC–50 BC - Credit: Marie-Lan Nguyen/Wikimedia Commons
Achilles’ mother was Thetis, a sea-nymph who was given in marriage to the mortal man Peleus, rather than to another god, after a prophecy claimed that her son would be greater than his father.