James Bond, eat your heart out! Incredible 454ft-megayacht has an underwater dining room, a 32ft 'blue hole' pool, and a 40-seater theatre - but it comes with an eye-watering price tag

The idea of an underwater dining room might sound like a concept from the latest James Bond blockbuster.

But it could soon become a reality, thanks to Dutch designers who have unveiled a 'ready-to-build' 454ft megayacht concept.

The concept, dubbed Inspire, features an underwater room that offers panoramic views of the ocean.

What's more, the lucky people on board will be able to enjoy a sauna, a 32ft 'blue hole' pool, and a 40-seater theatre.

While its exact cost is yet to be confirmed, a similarly-sized A+ yacht belonging to Manchester City owner Sheikh Mansour bin Zayed al Nahyan, reportedly cost around £333 million to build.

The exterior of the megayacht is designed to blend with its surroundings, according to Sander Sinot, the brains behind Inspire.

This is achieved through a light blue-green hull, floor-to-ceiling glazing and multiple hatches.

To encouarge guests to connect with the outdoors, the yacht includes al fresco lounges and shaded exterior decks.

The design philosophy is showcased in a submerged observation lounge situated 16ft (five metres below) the sea's surface, offering 'a unique opportunity to experience underwater life.'

The interiors span six decks, with the top deck reserved entirely for the owner, providing 250 square metres of living space.

This includes a bathroom with a full-beam vanity, two dressing areas, and a private lounge. 

A separate owner's lounge is located aft, enclosed by floor-to-ceiling glass to create a winter garden.

The main deck includes 10 guest cabins - two of which are VIP suites with balconies - a restaurant, a 40-seat theatre, a wellness centre, and a beach lounge.

Meanwhile, a beach lounge features a 32ft (10-metre) 'blue hole pool' designed with rock formations and a glass bottom for an immersive experience.

If it's relaxation you're after, you'll be happy to hear that the wellness centre is equipped with a sauna, Hammam, gym, massage, and treatment rooms.

Finally, the upper deck offers a large lounge with an integrated fireplace, intended as a social space alongside the restaurant and theatre 'for meetings, exchanging ideas and deepening discussions,' as stated by the designers.

Mr Sinot explained: 'The marine environment has always inspired mankind; by its visual splendour of surging waves and endless skies, as well as its sense of wonder, tales of exploration and legendary voyages.

'Inspire builds on that legacy by providing unprecedented openness between the inside and out.'

Mr Sinot confirms that Inspire is ready to be built, and the team is now seeking a buyer.