How can you die while scuba diving?

I know its a weird question :P Im doing a story for English and there is a father that dies whilst scuba diving with his daughter. They are swimming around a shipwreck from the sixties. I dont really know much about scuba diving so i was just wondering if anyone has any ideas of how he could die? Thanks heaps = D show more I know its a weird question :P
Im doing a story for English and there is a father that dies whilst scuba diving with his daughter. They are swimming around a shipwreck from the sixties.
I dont really know much about scuba diving so i was just wondering if anyone has any ideas of how he could die?

Thanks heaps = D
Update: I'd like a sort of out there-ish death. Something thats not normal but griping and sad.
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