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Bindi Irwin shares touching tribute to 'Crocodile Hunter' dad on his birthday

Wednesday would have been Steve Irwin's 55th birthday, and his daughter Bindi marked the occasion with a sweet throwback photo.
/ Source: TODAY

Wednesday would have been Steve Irwin's 55th birthday, and his daughter Bindi marked the occasion with a sweet throwback photo of the beloved "Crocodile Hunter."

The 18-year-old actress and conservationist shared a vintage shot of her dad with a sulphur-crested cockatoo at an Australia zoo.

"Always in our hearts," she wrote in a caption alongside the image.

RELATED: Steve Irwin's 13-year-old son looks just like him!

She was just 8 when Steve died in 2006.

Steve Irwin poses with his daughter Bindi Irwin October 2, 2005, in Uluru, Australia.Handout / Getty Images

And Bindi's famous father shared his birthday with another member of the family — his own mother, Lyn Irwin.

Last year, in honor of their big day, Bindi posted a photo of the two of them carrying a crocodile together.

RELATED: Bindi Irwin gets her driver's license — behind the wheel of her dad's old truck

Following Lyn Irwin's death in 2000, Steve penned his own tribute to his mom in support of a memorial fund, and explained how his love for her lived on after the loss.

"I was born right fair smack on my Mum's 20th birthday. Crikey! A birthday present she'll never forget," he wrote. "The umbilical cord of our souls was never cut; to this very day I am connected to my Mum."