open sea

American  

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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Example Sentences

While there is debate about why so many Chinese fishing vessels would gather in geometric formations in the open sea, experts widely agree that they were not there to fish.

From Barron's • Mar. 13, 2026

Most existing wave energy devices perform well only under specific wave conditions, limiting their effectiveness in the constantly shifting environment of the open sea.

From Science Daily • Feb. 18, 2026

Information gathered on Chinese Arctic voyages enables its scientists to build computer models of undersea conditions, which its navy can later tap to plot routes allowing them to operate more freely in the open sea.

From The Wall Street Journal • Dec. 30, 2025

Setup: “I’m Still Here” originally opened on an open sea at dawn as a military helicopter arrives.

From Los Angeles Times • Feb. 11, 2025

The ice had broken between us and the gap was widening as the current of my mind carried me swiftly into the open sea.

From "Flowers for Algernon" by Daniel Keyes