'I'm sure he is proud of you': Robert Irwin, 15, receives a heartwarming note from a stranger on a plane about his late dad Steve on Father's Day By Nick Hadley For Daily Mail Australia Published: 01:41 BST, 18 June 2019 | Updated: 02:29 BST, 18 June 2019 Viewcomments Steve Irwin died on September 4, 2006 while filming a wildlife documentary in Far North Queensland. And the conservationist's son, 15-year-old Robert, is often reminded of his dad and his legacy on Father's Day. This year was especially poignant for the young photographer, after a stranger sent him an anonymous note on a plane. 'I'm sure he is proud of you': Robert Irwin (pictured) received a heartwarming note from a stranger on a plane about his late dad Steve on Father's Day Robert took to Instagram on Tuesday to share a photo of the note, which was written in black ink on a napkin by a woman named Carolyn. The note read: 'I want to acknowledge your beautiful family on Father's Day! I'm sure he is proud of all of you!' Robert captioned the post: 'Our lovely flight attendant just handed us this note on our way off the plane... little gestures like this really mean a lot.' 'I want to acknowledge your beautiful family on Father's Day!' Robert took to Instagram to share a photo of the note, which was written on a napkin by a woman named Carolyn 'It warms my heart to see people who take a little bit of time to do something kind. Thank you, Carolyn,' he added. Robert's followers soon left supportive comments, with one person writing, 'You all deserve millions of those notes.' Another added: 'Super, super special and kind.' Sad loss: Steve Irwin died on September 4, 2006 while filming a wildlife documentary in Far North Queensland. Pictured on June 26, 2002 in San Francisco Steve Irwin, known around the world as the 'Crocodile Hunter', died at Batt Reef, Queensland on September 4, 2006. He was stabbed in the heart by a stingray underwater and was killed instantly. Steve is survived by his American wife Terri and their children Bindi and Robert. Family: Steve is survived by his American wife Terri and their children Bindi and Robert. Pictured at Australia Zoo on June 19, 2006 Share or comment on this article: All rights reserved for this news site dailymail and under his responsibility