The video made it on to Youtube and has had well over five million views at the time of this writing. McGlashan, who is a writer for the Daily Telegraph, saw the dead squid floating in the water and started filming it. The shark then made its appearance to start eating on the squid, even tearing a hole in the side of the squid's body as is evidenced on the video.
Adult giant squids only have one enemy in the ocean and that is the Sperm Whale. Smaller squids may be killed by Pilot Whales and sharks however. The shark in the video has been identified as a blue shark approximately eight feet long.
You can check out the video below:
