Steve Irwin
Also known as The Crocodile Hunter, Steve Irwin was a television personality, zookeeper, wildlife expert, and environmentalist. He had a natural love for crocodiles and other reptiles and entertained his fans with his great sense of adventure and his contagious smile. The last picture taken of Irwin was taken on his boat. He was traveling and filming a documentary with marine biologist Chris Jones.

Irwin passed away only two days after this photo of him was shot. Like others on our list, Irwin lost his life doing what he loved — and some may argue that if you’re not going to die old in your sleep, this is the best alternative. He was pierced through the heart by a stingray, and the news of his death shocked and saddened millions worldwide.