Maria on The Moon
22 named features carry the IAU descriptor Mare — a large dark plain — an ancient lava flood, not a sea on The Moon, out of 25 in the mapped Solar System.
Named
22
of 2,023 named places on The Moon — 1.1%
Largest
1,446 km
Mare Frigoris
Median size
366 km
Across the 22 with a measured diameter
Named between
1935–1976
IAU approval dates
How maria on The Moon get their names
The IAU assigns each feature class on each world a naming theme. Across the 22 maria with a recorded origin, 3 categories appear, led by Latin.
Latin20Great Britain1Germany1
All 22 maria on The Moon
Every one has its own page, on the surface it sits on.
Mare Frigoris1,446 kmMare Imbrium1,146 kmMare Australe997 kmMare Tranquillitatis876 kmMare Fecunditatis840 kmMare Nubium715 kmMare Serenitatis674 kmMare Crisium556 kmMare Insularum512 kmMare Humorum420 kmMare Smythii374 kmMare Marginis358 kmMare Cognitum350 kmMare Nectaris339 kmMare Orientale294 kmMare Ingenii282 kmMare Moscoviense276 kmMare Undarum245 kmMare Vaporum243 kmMare Humboldtianum231 kmMare Anguis146 kmMare Spumans143 km
Maria elsewhere in the Solar System
The same descriptor is used on 1 other world, for 3 more features.