A built-in pocket protector keeps sawfish from ‘sword fighting’ in the womb
Scientists get the first close look at an ephemeral organ that covers the rays’ toothy snout

A researcher releases a young smalltooth sawfish that has been tagged for study into Tampa Bay. These rays are born with a protective skinlike sheath around their toothed snout that sheds within about four days after birth.
Matthew Bernanke, NMFS ESA Permit No. 25864