Who were the winners of Blue Peter's Earthshot competition?

The five winners of Blue Peter's Earthshot competition got to meet Prince William at Windsor Castle

The winners of Blue Peter's Earthshot competition have been announced.

Children between the ages of five and 15 were invited to come up with an idea to help save the planet which would also be recognised by the Prince of Wales' Earthshot Prize.

Five winners were chosen from almost 2000 entries from all over the UK.

The ideas had to be linked to one of the five 'Earthshots' or goals: fix our climate, protect and restore nature, clean our air, revive our oceans and build a waste-free world.

The winners got to meet Prince William at Windsor Castle, they each presented their big idea and then got certificates.

They also got to ask him questions about the environment and joined him alongside Blue Peter presenter Joel Mawhinney in making Earthshot themed eco-friendly bird feeders.

Who were the winners?

The winners were presented with special certificates

The five winners are:

Marni, aged eight from London, who came up with an idea for family forests where a tree is planted for every person in the UK.

Mia, aged eight from North Yorkshire, who wants to stop factory pollution and global warming with an idea to help clean polluted water using algae ponds.

Llewyn, aged nine from Glasgow, who had an idea to invent compostable glasses which allow people to see how much carbon dioxide is in the air and encourage them to make steps to prevent pollution.

Ruby, aged 10 from Devon, who came up with an idea to reduce waste with solar powered vans to give people access to refill services.

Annie, aged 12 from Milton Keynes, who had an idea to help save coral reefs by supplying them with nutrients and calcium with 'ocean bursts', an idea which came from bath bombs.

What is the Earthshot Prize?

The Earthshot Prize was created by Prince William (pictured) and The Royal Foundation

The Earthshot Prize, which was launched back in 2020, is a global competition created by Prince William and The Royal Foundation.

Each year, people from all across the world are encouraged to put forward their ideas, innovations, and technologies aimed at protecting the planet and creating a sustainable future everyone.

As well as meeting Prince William, the five young winners of Blue Peter's competition got the opportunity to present their ideas at Speaker's House in the House of Commons in front of members of an environmental committee made up of MPs from different parties.

"I was absolutely thrilled to meet the Blue Peter Earthshot competition winners and to hear their imaginative and innovative ideas to help protect the planet," said Sir Lindsay Hoyle who is the speaker of the House of Commons.

"The thought that had gone into their ideas, and the enthusiasm with which they discussed them with us was genuinely exciting."

To find out more about the winning ideas, tune into Blue Peter at 5pm on Friday 7 February on CBBC and BBC iPlayer.