- Dragonfly larva - River nymph - Water nymph - A water nymph; one of the lower female divinities, fabled to
preside over some body of fresh water, as a lake, river, brook, or
fountain. - Any species of a tribe (Naiades) of freshwater bivalves,
including Unio, Anodonta, and numerous allied genera; a river mussel. - One of a group of butterflies. See Nymph. - Any plant of the order Naiadaceae, such as eelgrass,
pondweed, etc.