From what I am reading
here, it was a freak accident. Most peoples experiences with stingrays involve being stung in the foot or leg. I guess while diving, the odds of a hit to the chest are increased.
Also, like bee stings, different people can have different reactions.
It's a shame. The guy was a bit of a showman, but anything that kept the public's attention on nature and conservation was a good thing.
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