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1
high seas(noun, idiom, sea, waters)
1
international waters(noun, waters)
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ocean blue(noun, waters)
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APASmart Define. (2013). open sea thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/open_sea/thesaurus/synonyms
ChicagoSmart Define. 2013. "open sea thesaurus" https://smartdefine.org/open_sea/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, open sea thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/open_sea/thesaurus/synonyms>.
MLASmart Define. "open sea thesaurus" 19 May 2013. Web. 21 September 2026. <https://smartdefine.org/open_sea/thesaurus/synonyms>