underseas

American  

[uhn-der-seez] / ˌʌn dərˈsiz /

adverb

1. beneath the surface of the sea.

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Etymology

Origin of underseas

First recorded in 1675–85; undersea + -s ¹

Example Sentences

Alkonis is a specialist in underseas warfare and acoustic engineering who at the time of the crash had spent nearly seven years in Japan as a civilian volunteer and naval officer.

From Seattle Times • Dec. 14, 2023

Suleman Dawood, the 19-year-old who authorities said was one of five passengers aboard the submersible that imploded near the Titanic’s wreckage last week, was fearful of making the underseas voyage, according to his aunt.

From Washington Times • Jun. 25, 2023

The excursion company that operated Titan, the submersible that went missing Sunday, said Thursday that all five of the vessel’s crew members have died underseas.

From Washington Times • Jun. 22, 2023

As mentioned, the eruption also knocked out underseas internet cables, cutting off Tongans from the world digitally just as the polluted air and water did so physically.

From Salon • Jan. 20, 2022

Then, in May 2016, veteran underseas treasure hunter Bobby Pritchett found it off the coast of Cape Canaveral, Florida.

From "Shipwrecked!" by Martin W. Sandler