Around these greater gods and goddesses were grouped a host of lesser deities, some of whom enjoyed particular distinction in certain localities. Among them were Helios, the sun; Selene, the moon(antedating Artemis); the attendants of the Olympians, such as the Graces; the Muses; Iris, goddess of the rainbow; Hebe, goddess of youth and cupbearer of the gods; and Ganymede, the male counterpart of Hebe. The sea was ruled by Poseidon, the worship of whom was often accompanied by worship of his wife, Amphitrite. In their train were the Nereids, Tritons, and other minor sea deities.