If a species on the brink of extinction could learn to clone itself, that nifty trick could improve its chances for survival. And that’s exactly what scientists have discovered some smalltooth sawfish are doing in Florida — reproducing without mating. This critically endangered species is one of five species of sawfish, creatures that look like a cross between a shark, a ray and a chainsaw blade. Sawfish have a long, flat snout with widely spaced teeth that protrude in a line on either side, an arrangement that is reminiscent of a saw.
In Print: December 1, 2015