Oceanographers found strong evidence that overfishing sharks has led to the collapse of the shellfish industry; the sharks eat rays, and cownose rays, whose population has increased tenfold in thirty years, like to eat mollusks.
Oceanographers found strong evidence that overfishing sharks has led to the collapse of the shellfish industry; the sharks eat rays, and cownose rays, whose population has increased tenfold in thirty years, like to eat mollusks.