RE: Sting Rays
The situation with Steve Irwin was truely tragic. He was crossed up in a very unusual way, and the result is quite sad overall, especially given his environment focus on life. But, fate can be a tough balance for any of us.
A friend of mind was sting in the leg by a stingray on the central coast of California, and it had a profound affect on her life. The affect was both immediate and long term in its affect. Lots of nerve issues that are tough to overcome. I think that stingrays are worthy of significant respect and caution.
The ocean has many hidden obstacles, and outcomes that can be quite sobering in nature, even to those who are quite experienced.
Life can be a fragile thing, even when we are super tough.