alta mar

== Spanish == === Alternative forms === altamar === Etymology === Literally, “high sea”. === Noun === alta mar f (uncountable) open sea, high seas (regions of ocean far from shore) === Further reading === “alta mar”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025