Triton was the son of Neptune and Amphitrite, and the poets make him his father's trumpeter. Proteus was also a son of Neptune. He, like Nereus, is styled a sea-elder for his wisdom and knowledge of future events. His peculiar power was that of changing his shape at will.

Thetis, the daughter of Nereus and Doris, was so beautiful that Jupiter himself sought her in marriage; but having learned from Prometheus the Titan, that Thetis should bear a son who should be greater than his father, Jupiter desisted from his suit and decreed that Thetis should be the wife of a mortal. By the aid of Chiron the Centaur, Peleus succeeded in winning the goddess for his bride, and their son was the renowned Achilles. In our chapter on the Trojan war it will appear that Thetis was a faithful mother to him, aiding him in all difficulties, and watching over his interests from the first to the last.

Ino, the daughter of Cadmus and wife of Athamas, flying from her frantic husband, with her little son Melicertes in her arms, sprang from a cliff into the sea. The gods, out of compassion, made her a goddess of the sea, under the name of Leucothea, and him a god under that of Palaemon. Both were held powerful to save from shipwreck, and were invoked by sailors. Palaemon was usually represented riding on a dolphin. The Isthmian games were celebrated in his honor. He was called Portumnus by the Romans, and believed to have jurisdiction of the ports and shores.

Milton alludes to all these deities in the song at the conclusion of Comus.

"Sabrina fair, Listen and appear to us, In name of great Oceanus; By the earth-shaking Neptune's mace, And Tethys' grave, majestic pace, By hoary Nereus' wrinkled look, And the Carpathian wizard's hook (Proteus) By scaly Triton's winding shell, And old soothsaying Glaucus; spell, By Leucothea's lovely hands, And her son who rules the strands, By Thetis' tinsel-slippered feet, And the songs of Sirens sweet."

Armstrong, the poet of the Art of preserving Health, under the inspiration of Hygeia, the goddess of health, thus celebrates the Naiads. Paeon is a name both of Apollo and Aesculapius.

"Come, ye Naiads! To the fountains lead! Propitious maids! The task remains to sing Your gifts (so Paeon, so the powers of health Command), to praise your crystal element. Oh, comfortable streams! With eager lips And trembling hands the languid thirsty quaff New life in you; fresh vigor fills their veins. No warmer cups the rural ages knew, None warmer sought the sires of humankind; Happy in temperate peace their equal days Felt not the alternate fits of feverish mirth And sick dejection; still serene and pleased, Blessed with divine immunity from ills, Long centuries they lived; their only fate Was ripe old age, and rather sleep than death."

By this name the Latins designated the Muses, but included under it also some other deities, principally nymphs of fountains. Egeria was one of them, whose fountain and grotto are still shown. It was said that Numa, the second king of Rome, was favored by this nymph with secret interviews, in which she taught him those lessons of wisdom and of law which he embodied in the institutions of his rising nation. After the death of Numa the nymph pined away and was changed into a fountain.