Mantas, devil rays butchered for apothecary trade now identifiable
Thursday, September 19, 2013 - 11:00
in Astronomy & Space
Since dried filters from the mouths of filter-feeding rays hit apothecary shop menus in Asia—the thought being that eating ground-up filters will cleanse one's liver—there's been no way to know which of these gentle-natured rays was being slaughtered.