As for those who kill for pleasure or, worse, for no reason at all, we can only conjecture a deep submergence of the basic impulse toward care and affection for others. (bookbrowse.com)
The organisms Reilly studied rely on underwater oil and gas seeps, requiring him to spend 22 days in deep submergence vehicles. (sciencemag.org)
Delta lowering and sea - level rise thus accounts for submergence of about 1 cm per year. (sciencedaily.com)