About a year ago, Take Two started reporting on a mysterious ailment that was killing off sea stars all along the Pacific Coast.
It had been described by researchers as a "wasting disease" but no one had been able to put a finger on what was causing it.
Now a group of scientists think they have the answer.
Their findings were published this week in the Proceedings of the National Academy of Sciences.
Co-author Kevin Lafferty is a Marine ecologist with the U.S. Geological Survey at the University of California at Santa Barbara. He joins Take Two for more.