Prince Harry has spoken of the "huge responsibility" and privileges of being a senior member of the Royal Family on his tour of St Lucia.
Speaking in the grounds of Pigeon Island National Park, he said he will spend his whole life earning the respect of society for the privilege of his position - as well as the status as a grandson of the monarch affords him.
In a question and answer session with several teenagers, many of them wanted to know his opinion on environmental issues. But one youngster raised a more personal question: "What does it feel like to be a prince?"
He replied: "Firstly I don't have a crown or a cape, sorry about that", before adding that he didn't live in a castle.
He said: "As a prince you're born at birth with a natural platform to be able to try and make a difference, which a lot of people have to spend years and years getting to that point.
"So from that perspective I'm very lucky to have a platform to be able to try and make change in the causes that mean a lot to me but also to you guys."
Harry went on to say: "Being born with a lot of privilege comes with a lot of responsibility. But I like to think I'm going to have to spend the rest of my life earning the respect for that privilege, and trying to make a difference for the rest of my life."
The prince spoke to the youngsters after officially unveiling a plaque designating the Castries Water Works Reserve - and surrounding rainforest - as St Lucia's contribution to The Queen's Commonwealth Canopy Project.
He later planted a Calabash sapling - the national tree of St Lucia - in the park.
He said: "The Castries Water Works Reserve and other forests perform essential functions in safe-guarding and regulating water supply, preventing soil erosion and landslides. They also support a rich diversity of plants and animal life on this beautiful island.
"More broadly, the challenge of climate change is an issue which we, the next generation, must unite to tackle head on. Learning from those with the wisdom of experience but also bringing a fresh and innovative perspective.
"Climate change is already affecting the way of life of billions of people all over the world and it is those who have the least that are the most vulnerable.
"However inconvenient, all of us have got to adjust our way of life if we are to reverse the changes we have caused - before it's too late. There is no second chance."