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3 total sentences available.
At the end of a gestation period usually lasting from two to four weeks, the pregnant male’s abdominal area begins to undulate rhythmically, and strong muscular contractions eject from a few dozen to as many as 1,000 fully formed baby seahorses into the surrounding water.
Source: tatoeba (12001188)
Breath vocalized, i.e., vibrated and undulated.
Source: wiktionary
Come lovely and soothing death, / Undulate round the world, serenely arriving, arriving, / In the day, in the night, to all, to each, / Sooner or later delicate death.
Source: wiktionary