From Egypt to Iceland, incredible photographs reveal the beauty of the world's aquatic wonderlands

Some of the most spectacular sights on earth lie just beneath the water's surface.

From sunken wrecks off the Cayman Islands to sharks in the Atlantic ocean, a new photography book showcases the breathtaking beauty of aquatic life.

Award-winning underwater photographer Alex Mustard has been shooting marinescapes for over ten years, and his new 192-page book Underwater Photography Masterclass, available to buy in April, shares his expertise with shutterbugs of all levels.

The guide is filled with 280 images from his travels, which have taken him around the world from West Papua to the Egyptian sea.

It also features tips on how to achieve equally stunning shots, how to get a pygmy seahorse to face your camera to why you want to flinch first when playing chicken with a basking shark!

One of the most striking moments captured is a split level image showing a dusky pink sunrise above the surface and two stingrays on the golden ocean bed below.

Here are some of Mustard's most spectacular and extraordinary photographs captured away from dry land.

Otherworldly: A split level image of two southern stingrays (Dasyatis americana) swimming over a sand bar in the early morning. The female is much larger than the male, although the perspective of the photo accentuates the difference in Grand Cayman, Cayman Islands