Clytia

In the best-known mythic strand Clytia is an Oceanid — a sea‑associated nymph of the Greek mythic world — who falls hopelessly in love with the sun‑god Helios (Phoebus Apollo in some summaries). When Helios takes a new lover, Leucothoe, jealous Clytia betrays Leucothoe to her father, an act which causes Leucothoe's death; after Helios rejects or turns away from Clytia she pines and is transformed in the etiological metamorphosis motif (classical summaries and later art tradition identify her change into a plant that turns toward the sun). The name Clytia/Clytie is also used for several otherwise unrelated women in classical genealogies — for example a daughter of Pandareus abducted with her sister by Harpies, a wife of Eurypylus of Cos who entertains Demeter, and other maternal and local genealogical figures — indicating multiple narrative attestations rather than a single uniform origin for all bearers of the name.

Classical sources characterize Clytia as an Oceanid or ocean nymph — a female nature spirit associated with the sea — but give little sustained physical description; iconographic and literary traditions emphasize her nymph identity and the later image of her languishing and turning toward the sun as part of her metamorphosis (e.g., Bernard Picart’s engraving titled "Clytia Changed into a Turnesole, Heliotrope"). As a mythic figure she is presented as a semi‑divine young woman rather than a monstrous form. Separately, the biological genus Clytia denotes small cnidarians (hydroid/medusa life stages); species accounts (for example Clytia hemisphaerica) describe planula, hydroid, and medusa stages typical of hydrozoans, but those anatomical details belong to scientific descriptions of the animal, not the mythic persona.

In myth Clytia's notable capacities are narrative and emotive rather than overt supernatural powers: intense, unrequited passion for Helios; jealousy that motivates betrayal (leading to Leucothoe's death in some accounts); and the classical metamorphosis motif in which she wastes away and is changed into a plant that turns toward the sun — an etiological transformation tying personal emotion to a natural phenomenon. Other women named Clytie in myth perform ordinary social roles (hostess to Demeter, mother, or victim of abduction) rather than exhibiting distinctive magical abilities. In scientific contexts Clytia species display biological life‑cycle behaviors: external fertilization, rapid development from egg to ciliated planula (reported ~24 hours for Clytia hemisphaerica under laboratory conditions), settlement in response to cues, and hydroid/medusa stages — facts about the animal genus, not the mythic nymph.