- beneath the surface of the sea.
Origin of underseas
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for underseas
A collision while underseas in a submarine is a serious matter.The Heads of Apex
On came the destroyer until it was directly over the underseas craft.
But there was little time for such thoughts, as this underseas mission concerned the lives of nine young people.Sign of the Green Arrow
Roy J. (Roy Judson) Snell
It was sepia from the cuttlefish's ink sacs—the weapon with which these monsters of the underseas blind and confuse their victims.
The first underseas cable was laid in 1851 between France and England.The Outline of History: Being a Plain History of Life and Mankind
Herbert George Wells