The Guardian's Moons Neptne has at least eight moons. These small worlds orbit among the rings, sometime interacting with them and changing their appearance. Nereid is 1068 km in diameter and orbits Neptune in a large elliptical orbit. It takes 360 days for Neried to make one trip around Neptune.
Triton is, by far, the strangest moon in the entire solar system.
It is the largest of Neptune's moons with a diameter of 8495 km, about 78 percent the size of our moon. The retrograde rotation hints that some time in the past, the system was disturbed, the result being the strange orbit. Triton is a very cold world with a temperature of 37 K, so cold, that it is able to maintain an atmosphere of nitrogen and methane. This atmosphere though, is only a fraction as dense as Earth's atmosphere. A likely model for Triton is a rocky interior and an icy crust.