People from all over the world are remembering animal expert Steve Irwin who was killed on Monday.
Thousands of his fans went to his zoo in Australia on Monday to leave flowers and to pay their respects.
Mr Irwin, known as the Crocodile Hunter, died when he was stung in the chest by a fish called a stingray, while he was filming for a TV show.
It's thought he was swimming above one of the rays, which flicked its tail up because it felt threatened.
Stingrays are normally very peaceful animals, and this is a very unusual thing for them to do.
Tributes for Steve Irwin
Police are now looking at footage of Mr Irwin's death to see exactly what happened.
The TV presenter was very popular all over the world, and he might be given a very big funeral by the Australian government, if his family agrees.
Australian Prime Minister John Howard said he was the Australian that all others wanted to be.