WWF is an independent and non-partisan organisation that was set up in 1961.
The late Duke of Edinburgh, who passed away in April aged 99, was one of the group’s founders.
Sweden’s longest-reigning monarch told the gala: “Ever since I was a child, I have enjoyed being out in nature.
“Over the years, it has become as much an interest as a source of joy.
“And that is something I know I share with a lot of you.”
King Carl added: “Yes, it is really a privilege that we have here in Sweden – the opportunity to move freely in forests and land.
King Carl, who has sat on the Swedish throne for 44-years, went on to tell the conference: “Personally, I see it as a great privilege to have experienced how valuable natural environments.
“Thanks to invaluable efforts from the World Wide Fund for Nature – have been saved and how endangered species such as sea eagles, beavers and mountain foxes have returned.
“There are actually beavers around Drottningholm Palace!
“Unfortunately, we humans have the ability to inflict great damage on nature.
“But thankfully we also have the opportunity to do the right thing”.
Source: EXPRESS CO UK