deep-sea

American  

[deep-see] / ˈdipˈsi /

adjective

1. of, pertaining to, in, or associated with the deeper parts of the sea.

   deep-sea fishing; deep-sea diver.

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deep-sea British  

noun

1. (modifier) of, found in, or characteristic of the deep parts of the sea

   deep-sea fishing

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Etymology

Origin of deep-sea

First recorded in 1620–30

Example Sentences

See Examples For:

deep-sea

The Mariana Islands, Guam and American Samoa all want at least a temporary ban on deep-sea mining in their territorial waters.

From Barron's ● Aug. 6, 2026

Pacific island nations are divided on whether deep-sea mining will deliver economic windfalls, or environmental catastrophe.

From Barron's ● Aug. 6, 2026

Conservationists say this and other extraordinary deep-sea snails, limpets, mussels and clams could be threatened by plans to mine valuable minerals from the deep seabed.

From BBC ● Jul. 9, 2026

In April 2022, the senior military officers say, they approached her through a member of their unit who was a hobby deep-sea diver.

From The Wall Street Journal ● Jun. 12, 2026

Crusher was designed for a single purpose: to mine deep-sea minerals.

From "The Wild Robot Protects" by Peter Brown

Related Words

• aquatic
• coastal
• maritime
• naval
• saltwater
• seagoing