Mythology
In myths, legends, scripture and folklore, the category naga comprises all kinds of serpentine beings.
Under this rubric are snakes, usually of the python kind (despite the fact that naga is usually taken literally to refer to a cobra,) deities of the primal ocean and of mountain springs; also spirits of earth and the realm beneath it, and finally, dragons.
In Indian mythology, Nagas are primarily serpent-beings living under the sea. Here we see the king and queen of water nagas worshipping Parshva, the Jain Tirthankara of the era before this one.
All nagas are considered the offspring of the Rishi or sage, Kasyapa, the son of Marichi. Kashyapa is said to have had by his twelve wives, other diverse progeny including reptiles, birds, and all sorts of living beings. They are denizens of the netherworld city called Bhogavati.