Prince William, also known as the Duke of Cambridge, has traveled to New York City for a two-day mission focusing on nature and the Earthshot Prize.

He's meeting with people who care about the environment, like scientists, kind-hearted folks who give their money to help others, and important business leaders.

The most important part of his trip is a meeting called the Earthshot Prize Innovation Summit, happening on Tuesday.

There Prince William will collaborate with supporters such as Caroline Kennedy, the U.S. Ambassador to Australia, Dame Jacinda Ardern, the former Prime Minister of New Zealand, and José Andrés, the Chef and Founder of World Central Kitchen.

Before the big meeting, Prince William went to see a special project which is all about making New York's water cleaner and safer for animals.

It used to be that New York's waters had lots of oysters, which are really good for the ocean, but oysters disappeared.

The project, which has involved over 11,000 students and nearly 15,000 volunteers, has introduced 122 million oysters across more than 19 acres of the harbor since 2014.

The Earthshot Prize Innovation Summit will unveil this year's 15 Earthshot Prize finalists, selected based on climate solutions aligned with the prize's five key pillars: Protect and Restore Nature, Clean Our Air, Revive Our Oceans, Build A Waste-Free World, and Fix Our Climate.

These finalists will compete for one of the five $1.2 million prizes, with the winners to be announced during a prestigious awards evening in Singapore on November 7.