I forgot to add, after the 2nd dive rollcall, the captain puts the boat in gear, and we hear a loud BANG as a tank falls to the ground. This is followed by divers jumping around, a metal rolling sound, another clunk as a tank hits the back platform, the captain yelling for someone to grab it, and splash. One person did attempt to grab it and banged their hand up a little and luckily was fine. One of the dive guides jumped in but couldn't find it.
The person claims they had it single wrapped with the rope. I heard them say to the captain that they were heading to the dive shop to pay for the rental tank. This got me thinking, should the diver be liable?