A person who has 18 (inside and/or outside) is usually very hardworking and will not have an early retirement plan in work or career.
Who is he?
He was an Australian television personality, wildlife expert, and conservationist.
He loved what he was doing and had achieved worldwide fame from the television series The Crocodile Hunter, an internationally broadcast wildlife documentary series co-hosted with his wife. Together, the couple also co-owned and operated Australia Zoo, founded by his parents in Queensland.
He was a passionate conservationist and believed in promoting environmentalism by sharing his excitement about the natural world rather than preaching to people.
Sad to say that on 4 September 2006, he was fatally pierced in the chest by a stingray spine at the Great Barrier Reef. He was then 44 years old.
Source from Wiki.