In the clip, we see divers pass through protected monuments that have remained hidden on the British seabed for centuries.
These once magnificent ships are now no more than than a hiding ground for fish, as the shipwrecks inhabit the depths of the sea.
In a report by the Daily Post, the news outlet detailed some of the wrecks in Welsh waters.
SG
The Mary – found near Skerries, Anglesey – was renowned for being the first royal yacht of the Royal Navy, but it was also the first to sink.
It was built by the Dutch East India Company and given to King Charles II when he returned to the throne.
But in 1675 the boat hit a rock and capsized. Of the 74 people on board, only 39 survived.
The Pwll Fanog Wreck – found in the Menai Strait, Anglesey – was a cargo vessel that dates back to the 14th or 15th century.
The identity of the vessel remains unknown but it seems to have sunk with a 20 ton cargo of some 40,000 slates.
The circumstances remain mysterious as it is illegal to dive within 150m or interfere with the wreck without permission unless a licence is given by the Welsh Government.
The Tal y Bont Wreck – found near Barmouth, Gwynedd – was a heavily armed merchant vessel that sank around 1702, leaving behind treasure and an insight into 18th century history.
Among the cargo was 65 tonnes of Carerra marble from Italy and it was well armed with 18 main batteries, eight smaller cast iron and 10 wrought iron guns.
The wreck has been partially escalated to reveal the contents.
The Resurgam Submarine – found near Rhyl, Denbighshire – is an incredible looking sub, clearly ahead of its time.
Nicknamed “The Egg,” the underwater ship was designed by Rerend George William Garrett in 1879 and a prototype was built by J T Cochrane.
It was later tested in the Liverpool Docks and the success of the trial led them to build the Resurgam.
The vessel was built at the Britannia Ironworks, Birkenhead, for a cost of £1,538.