In just a short time, one of the rarest sharks in the world went from swimming in Philippine waters to simmering in coconut milk. The 13-foot-long (4-meter-long) megamouth shark (pictured), caught on March 30 by mackerel fishers off the city of Donsol, was only the 41st megamouth shark ever found, according to WWF-Philippines. Fishers brought the odd creature—which died during its capture—to local project manager Elson Aca of WWF, an international conservation nonprofit. Aca immediately identified it as a megamouth shark and encouraged the fishers not to eat it. But the draw of the delicacy was too great: The 1,102-pound...