The saw of Pristis microdon whips back and forth to cut down prey in open water and then helps the fish position its dinner at the correct angle for a good gulp.
Found in "Sawfish don't saw" online at: sciencenews.org/view/generic/id/338962/title/Sawfish_don%E2%80%99t_saw
Video credit: B.E. Wueringer et al/Current Biology 2012
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