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The Pacific Ocean from the Latin name Mare Pacificum, "peaceful sea", bestowed upon it by the Portuguese explorer Ferdinand Magellan.
There are five named maria on the Moon: Mare Tranquillitatis, Mare Serenitatis, Mare Crisium, Mare Imbrium, and Mare Nectaris.
Mare
Titan is the biggest moon of saturn and the second biggest in the solar system
Attack on Titan