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

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

It had not been seen since it reportedly entered the region in January but it had been crossing the open sea where satellite coverage is limited.

From BBC • Feb. 16, 2026

On February 4, Miyasaka once again declared an "open sea" or "ake no umi", meaning little chance one would appear before spring.

From Barron's • Feb. 15, 2026

The style Matthiessen conjures is almost visual, with fragments of scene description and lines of unattributed dialogue arranged on the page like solitary brushstrokes or like breakers of spume on the open sea.

From The Wall Street Journal • Nov. 21, 2025

We must have been out on the open sea now, the surging sea.

From "Secrets at Sea" by Richard Peck