Bindi Irwin Remembers Steve Irwin on 10th Anniversary of His Death

The "Crocodile Hunter" died 10 years ago Sunday.

As a caption, she wrote: "You'll be my hero for my entire existence. I love you more than words can describe."

Bindi Irwin, now 18, was only 8 when her father, known as the "Crocodile Hunter," was killed by a massive stingray while shooting a documentary called "Ocean's Deadliest" in 2006. Steve Irwin was 44.

Back in 2014, Bindi Irwin opened up about losing her father.

"I remember after we lost Dad, so many adults came up to me and said, 'Honey, time heals all wounds,'" she told People magazine. "That is the biggest lie you will ever hear. It doesn't."