| hydrothermal vent(crack, water, opening, rift) | |
| abyss(nature, environment, crack, gap) | |
| Atacama Trench | |
| Bougainville Trench | |
| Japan Trench | |
| Nares Deep | |
| deep blue sea |
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Power Thesaurus
| APA | Smart Define. (2016). deep thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/deep/thesaurus/narrower |
| Chicago | Smart Define. 2016. "deep thesaurus" https://smartdefine.org/deep/thesaurus/narrower (accessed September 23, 2026). |
| Harvard | Smart Define 2016, deep thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/deep/thesaurus/narrower>. |
| MLA | Smart Define. "deep thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/deep/thesaurus/narrower> |