I came across this one of a kind video filmed off the coast of South Africa in which a whale had died and washed ashore. Not knowing what else to do the local government had it towed out to sea, which attracted a huge gathering of great white sharks.
What happened next was incredible. Over a period of about 24 hours they almost completely devoured the whale, and then decided to get frisky! So, not only did they crew get to film a massive feeding frenzy, they also got to witness the first ever mating session of great white sharks.