Bindi and Robert Irwin pay tribute to dad Steve on anniversary of his death

Bindi and Robert Irwin took time to honour their late father Steve Irwin over the weekend, marking the the 16th anniversary of his death.

The beloved Crocodile Hunter star passed away on 4 September, 2006, which also happens to be Father's Day in Australia.

Steve's children Robert and Bindi, who have both followed in their dad's footsteps and become animal conservationists, each paid tribute to him on Sunday with some sweet childhood photos.

Bindi, who is now a parent herself, shared a photo of herself as a youngster, posing in a boat with a baby crocodile in her hands, with her dad grinning behind her.

She wrote: "Grandpa Crocodile, I know you would’ve been the most incredible grandfather because you were such an extraordinary dad. Thank you for being an amazing guardian angel for Grace."

Bindi, 24, is mum to one-year-old Grace Warrior Irwin Powell, who she shares with her husband Chandler Powell.

Meanwhile, Robert, 18, shared a photo to Instagram of Steve holding him as a baby.

He wrote: "It’s Father’s Day today in Australia, and I am sending my love to those who are missing their dad today.

"I cherish all the good times with my dad and feel grateful to be able to keep his memory and legacy alive."

Supporting her little brother, Bindi shared Robert's sweet post on her own Instagram Story, and wrote: "Love you @robertirwinphotography Dad is so proud of you."

Robert and Bindi's mum, Terri Irwin, who was married to Steve for fourteen years up until his death, also took to social media to remember her late husband.

Terri shared two gorgeous snaps to Twitter - one photo of the young family of four, and another of Bindi and Robert all grown up.

She wrote: "The part of Steve's life that he loved the most was being a dad. He would be so very proud."

Back in June, Terri made a similar tribute to Steve to mark their 30th wedding anniversary, writing at the time: "I married this incredible bloke 30 years ago today. What an adventure! Love and legacy live on."

Terri is now the owner of Australia Zoo in Queensland, which was first opened by Steve's parents Bob and Lyn Irwin back in 1970.

Throughout his childhood, Steve had helped his parents to care for the crocodiles and reptiles in their zoo, naturally giving him his love for animals and conservation.

The wildlife expert died of a stingray attack in 2006 while filming a documentary in the Great Barrier Reef.

Since then, Terri, Bindi, and Robert have been working in the Australia Zoo to preserve Steve's legacy.

After welcoming baby Grace last year, Bindi revealed that she had decided to honour her late father while deciding on a name.

In a post to social media back in 2021, Bindi explained that Grace's middle names, Warrior Irwin, are "a tribute to my dad and his legacy as the most incredible wildlife warrior."