Kate Middleton, 36, doesn’t shy away from adventurous sports and excursions in her private life as well as during royal duties.
Rock climbing, white water rafting and skiing are just some of the dangerous activities she has previously partaken in.
While on holiday with Prince William in Mustique, the destination the family annually travel to due to the intense security, she tried something else extremely dangerous.
The royal family member was training to pass her advanced scuba diving test which meant she can go as deep as 98 feet, joining Prince William.
Scuba diving really has opened my eyes not only to many extraordinary sights, but also to the responsibilities that we have as guardians of the underwater world
Kate would have undertaken five deep dives and navigation dives to pass the test.
She would have also had to learn about the physiological parts of deep sea diving, as well as how to explore wrecks and take pictures underwater.
Deep sea divers also have to carry emergency equipment such as knives and compasses to be able to escape any treacherous situation.
She joins her husband who was already an experienced diver and leads the British Sub-Aqua Club (BSAC), something his father and grandfather once did.
A diving school in Mustique where Kate received her PADI qualification told the Telegraph: “Diving is something the Duchess very much enjoys.”
Kate Middleton: The royal passed a very dangerous test during Mustique holiday
Kate Middleton: She is now an advanced scuba diver after learning in Mustique
Kate Middleton: The royal is happy to try dangerous sports such as yachting and white water rafting
Scuba diving has a number of risks, with one of the most dangerous being the “bends” which is when nitrogen bubbles form in the blood if the diver rises to the surface too quickly.
Both Kate and William also both hope their children follow in their love of watersports.
William is known to love surfing and diving, while Kate was on The Sisterhood rowing team and has even been spotted water skiing in Mustique.
The Prince previously spoke out during a swimming event in Covent Garden about his joy of being underwater and hopes of his family sharing the desire.
He told reporters: “Scuba diving really has opened my eyes not only to many extraordinary sights but also to the responsibilities that we have as guardians of the underwater world.”
Kate Middleton: Her husband Prince William is also an advanced scuba diver
The royal couple often head to Mustique for privacy, with the secluded islands having strict security in keeping paparazzi out.
This is why there are rarely any pictures of the Royal Family when they head to the Caribbean islands.
It is thought to have been the first holiday Prince Louis also went on as he joined the family earlier this year.
Other tourists revealed some of their antics on holiday, however, with the pair making the most of the popular cocktail bar on the island.
They headed to Basil’s cocktail bar although “kept it rather classy,” according to onlookers.