A mother queen conch lays half a million eggs over a day or so in a gelatinous strand that, unfurled, would stretch longer than a semitruck trailer.A queen conch shell can grow as big as a football.
Writing today in the journal Science Advances, researchers from several universities and museums in France describe how they used CT scans and other imaging wizardry to show that a person during the Upper Paleolithic age took great care to modify the shell, the oldest such instrument ever found.