Prince William and Kate Swim With Sharks During Belize Tour

Prince William and Kate Middleton posted video of them scuba diving with sharks during a private moment on their Belize tour.

The Duke and Duchess of Cambridge left the media behind as they took the plunge in the beautiful blue waters of the Caribbean.

After jumping in off the side of a boat, the royal couple saw some colorful fish and got up close and personal with at least one nurse shark.

Nurse sharks can be up to 14 feet but are slow moving and not considered dangerous to humans, according to National Geographic.

At one point, the camera gets so close it is seen following along behind the underwater predator.

Kate can be seen giving the "okay" hand symbol in one section of the extraordinary film, shot during a trip to South Water Caye, above the Belize Barrier Reef.

William and Kate posted the video on their Instagram account, writing: "On Sunday, we were lucky enough to spend time diving at South Water Caye, directly above the spectacular Belize Barrier Reef. It was a privilege to see for ourselves the world-leading ocean conservation work being done here."

It was not all thrill-seeking, however, as the couple were also there to learn about the impact of climate change and the efforts of their hosts to counteract it.

William and Kate wrote on Instagram: "Belize is home to the second largest barrier reef in the world. While the effects of climate change are evident, the Government of Belize and communities across the country deserve huge recognition for their efforts to restore this incredible marine environment—with a commitment to protect 30 percent of it by 2030."

The unforgettable moment came after a rocky start to the sun-drenched tour—with the couple forced to cancel a planned visit to Indian Creek, Belize, over a dispute about where they would land their helicopter.

The video was also released on the same day hundreds of protesters gathered at the British High Commission in Kingston, Jamaica, where they handed over an open letter addressed to William and Kate calling for reparations for slavery.

It read: "During her 70 years on the throne, your grandmother has done nothing to redress and atone for the suffering of our ancestors that took place during her reign and/or during the entire period of British trafficking of Africans, enslavement, indentureship and colonialization.

"You, who may one day lead the British Monarchy, are direct beneficiaries of the wealth accumulated by the Royal family over centuries, including that stemming from the trafficking and enslavement of Africans.

"You therefore have the unique opportunity to redefine the relationship between the British Monarchy and the people of Jamaica.

"If you choose to do so, we urge you to start with an apology and recognition of the need for atonement and reparations."