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open sea

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noun
  1. the main body of a sea or ocean, especially the part that is outside territorial waters and not enclosed, or partially enclosed, by land.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for open sea

Historical Examples

  • At dawn we had completed most of the open-sea passage on the return journey.

    The Blocking of Zeebrugge

    Alfred F. B. Carpenter

  • The open-sea or pelagic haunt includes all the brightly illumined surface waters beyond the shallow water of the shore area.

  • These open-sea young eels are known as Leptocephali, a name given to them before their real nature was proved.

  • Shipbuilding, including steamers for open-sea navigation, is on the increase.