An injured salmon shark washed ashore Sunday morning in Arch Cape, Ore.

The injured shark.

It was alive when Spokane resident Ken Johnson photographed it, he said, but the shark disappeared a short time later, possibly having returned to the ocean somehow.

The shark was between 4 and 5 feet long and was found lying in a small pool of blood.

A slightly larger salmon shark also washed up at Rockaway Beach at the end of last month. That shark was already dead when found.