NAUMACHIA [aka NAUMACHY]
1. a mock sea battle.
2. a naval battle; especially a mock sea fight put on by the ancient Romans.
3. a show or spectacle representing a sea fight; also, a place for such exhibitions.
Etymology: Latin mock naval battle < Greek naumachía, “a sea fight”, equivalent to naû(s), “ship” + mách(ē), “battle, fight”.