Nature is a great magician who can create beautiful things. The flooded caves of Yucatan are undoubtedly one of those things. Nature took many millions of years to create them in their final form. The caves are very large, hundreds of kilometres long. They are characterised by their variety of shapes and sizes, their variety of colours and their magnificent stalactite decoration. The series of photographs you see here brings a glimpse of the splendour of flooded caves into our world "above water". The photos were taken while cave diving in Yucatan using special UW equipment.