Planet Mars has two compact moons - both equally of which may be captured asteroids. Deimos and Phobos are quite challenging to view other than in big telescopes on account of getting so near Mars. Moons are detailed by sizing. Earth’s oceans, by comparison, only extend down about 11 kilometers https://bestmoons50471.theideasblog.com/35207002/not-known-details-about-best-moons