blue holes

A form of blue hole — A submarine cave or sinkhole, a roughly circular, steep-walled depression that is typically anoxic below a certain depth.

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Meanings

noun
  1. pluralplural of blue hole
Cite this entry
APA

blue holes. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/blue%20holes

MLA

“blue holes.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/blue%20holes. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “blue holes,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/blue%20holes.

Source: blue holes on Wiktionary, CC BY-SA 4.0.