Fishermen sailing off the eastern Russian coast were shocked to discover the preserved corpse of a tiger floating in the sea.
Disturbing footage taken from the boat in the Sea of Japan off the coast of Vladivostok on Sunday shows the rare adult Amur tiger floating past their vessel.
The big cat showed no signs of injury, but the baffling find has prompted the city prosecutor's office to launch an investigation into the mysterious discovery.
Police confirmed that the dead animal was an Amur, or Siberian, tiger, a critically endangered species that typically inhabits the forests of Russia's Far East.
City prosecutors said: 'All circumstances of the incident, including the reasons for the animal's death, will be established.'
