Bindi Irwin, Steve Irwin's 18-year-old daughter posted a picture on Instagram of her and her father on the 10-year anniversary of his death.
"You'll be my hero for my entire existence," Irwin captioned the photo. "I love you more than words can describe."
Steve Irwin was an Australian wildlife expert and host of the show The Crocodile Hunter. He died on Sep. 4, 2006 when a stingray stabbed him in the heart while filming the wildlife documentary Ocean's Deadliest.
Sep. 4 is also Father's Day in Australia. Terri Irwin, co-host on The Crocodile Hunter and Steve's wife from 1992 to his death, posted a picture on Twitter with Steve about the holiday.