How Steve Irwin passed on?

Stephen Robert Irwin (Born on 22 February 1962 – 4 September 2006), known simply as Steve Irwin and nicknamed "The Crocodile Hunter", was an iconic Australian television personality, wildlife expert, and conservationist. He achieved worldwide fame from the television program “The Crocodile Hunter”, an internationally broadcast wildlife documentary series, co-hosted with his wife Terri Irwin. Together, they also co-owned and operated Australia Zoo, founded by Steve Irwin’s parents in Beerwah, Queensland. He died in 2006 after being fatally pierced in the chest by a stingray barb while filming in Australia's Great Barrier Reef.
Steve Irwin was born on his mother's birthday to Lyn and Bob Irwin in Essendon, a suburb of Melbourne, Victoria. Irwin moved with his parents as a child to Queensland in 1970. Irwin described his father as a wildlife expert interested in herpetology, while his mother Lyn was a wildlife rehabilitator. After moving to Queensland, Bob and Lyn Irwin started the small Queensland Reptile and Fauna Park, where Steve grew up around crocodiles and other reptiles.
Irwin became involved with the park in a number of ways, including taking part in daily animal feeding, as well as care and maintenance activities. On his sixth birthday he was given a 12-foot (4 m) scrub python. He began handling crocodiles at the age of nine after his father had educated him on reptiles from an early age. Also at age nine he wrestled his first crocodile, again under his father's supervision. He graduated from Caloundra State High School in 1979. He soon moved to Northern Queensland, where he became a crocodile trapper, removing crocodiles from populated areas where they were considered a danger. He performed the service for free with the quid pro quo that he be allowed to keep them for the park. Irwin followed in his father's footsteps, becoming a volunteer for the Queensland Government's East Coast Crocodile Management program.
The park was a family run business, until it was turned over to Steve. He took over the running of the park, now called Australia Zoo (renaming it in 1992). Also that year, he appeared in a one-off reptile and wildlife special for television. In 1991, he met Terri Raines(Terri Irwin) at the park, while performing a demonstration. The two married in June 1992, in Terri's hometown of Eugene, Oregon. The footage, shot by John Stainton, of their crocodile-trapping honeymoon became the first episode of The Crocodile Hunter. The series debuted on Australian TV screens in 1996, and by the following year had made its way onto North American television. The Crocodile Hunter became successful in the United States and also, after repackaging by Partridge Films for ITV, in the UK. In 1998, he continued, working with producer and director Mark Strickson, to present The Ten Deadliest Snakes in the World. By 1999, he had become very popular in the United States, making his first appearance on The Tonight Show with Jay Leno. By this time, the Crocodile Hunter series was broadcast in over 137 countries, reaching 500 million people. His exuberant and enthusiastic presenting style, broad Australian accent, signature khaki shorts, and catchphrase "Crikey!" became known worldwide. Sir David Attenborough praised Irwin for introducing many to the natural world, saying "He taught them how wonderful and exciting it was, he was a born communicator."
A 2000 FedEx commercial with Steve Irwin lightheartedly dealt with the possibility of occupational death from snakebite and the fanciful notion that FedEx would have saved him, if only FedEx were used.
Under Irwin's leadership, the operations grew to include the zoo, the television series, the Steve Irwin Conservation Foundation (renamed Wildlife Warriors), and the International Crocodile Rescue. Improvements to the Australia Zoo include the Animal Planet Crocoseum, the rainforest aviary and Tiger Temple. Irwin mentioned that he was considering opening an Australia Zoo in Las Vegas, Nevada, and possibly at other sites around the world.
In 2001, Irwin appeared in a cameo role in the Eddie Murphy film Dr. Dolittle 2, in which a crocodile warns Dolittle that he knows Irwin is going to grab him and is prepared to attack when he does, but Dolittle fails to warn Irwin in time. Irwin's only starring feature film role was in 2002's The Crocodile Hunter: Collision Course, which was released to mixed reviews. In the film Irwin (who portrayed himself and performed numerous stunts) mistakes some CIA agents for poachers. He sets out to stop them from capturing a crocodile, which, unknown to him, has actually swallowed a tracking transmitter. The film won the Best Family Feature Film award for a comedy film at the Young Artist Awards. The film was produced on a budget of about $12 million, and has grossed $33 million. To promote the film, Irwin was featured in an animated short produced by Animax Entertainment for Intermix.
In 2002, the Irwins appeared in the Wiggles video/DVD release Wiggly Safari, which was set in Irwin's Australia Zoo. It featured Irwin-themed songs written and performed by the Wiggles such as "Crocodile Hunter", "Australia Zoo", "Snakes (You can look but you better not touch)" and "We're The Crocodile Band". Irwin was featured prominently on the cover and throughout the movie.
In 2006, Irwin provided his voice for the 2006 animated film Happy Feet, as an elephant seal named Trev. The film was dedicated to Irwin, as he died during post-production. Another, previously incomplete scene, featuring Steve providing the voice of an Albatross and essentially playing himself, was restored to the DVD release.
Animal planet ended The Crocodile Hunter with a series finale entitled "Steve's Last Adventure." The last Crocodile Hunter documentary spanned three hours with footage of Irwin's across-the-world adventure in locations including the Himalayas, the Yangtze River, Borneo, and the Kruger National Park. Irwin went on to star in other Animal Planet documentaries, including The Croc Files, The Crocodile Hunter Diaries, and New Breed Vets.
In 1997 whilst on a fishing trip with his father, Steve discovered a new species of turtle, Steve was given the honor of naming the newly discovered species and named it after his family; Irwin's Turtle Elseya irwini.
In 2001, Irwin was awarded the Centenary Medal for his "service to global conservation and to Australian tourism". In 2004, he was recognised as Tourism Export of the Year. He was also nominated in 2004 for Australian of the Year, an honour which was won by Australian Cricket Captain Steve Waugh. Shortly before his death, he was to be named an adjunct professor at the University of Queensland's School of Integrative Biology. On 14 November 2007 Irwin was awarded the adjunct professorship posthumously by the University of Queensland. In May 2007, the Rwandan Government announced that it would name a baby gorilla after Steve Irwin as a tribute to his work in wildlife conservation. The Crocodile Rehabilitation and Research Centre in Neyyar Wildlife Sanctuary was named by the Kerala government after late Steve Irwin.
I think the key was the removal that released the blood flow from the inside of the heart and I think that was probably the final event for Steve……….