Approximately right in the centre of Jutland, the western peninsular part of the realm, there is a region called Søhøjlandet, which translates to “The Lake Highland.” It is a sparsely populated and largely forested area with many lakes, a large part of which make up a reserve.

At Lake Cama, in Switzerland, a fish repopulation project, conceived and implemented by the Hunting and Fishing Office of Graubünden, introduced trout and char into the lake, with the aim of preserving biodiversity and combating the invasion of alien species. Project participant, technical diver and underwater photographer Carlo Roncoroni reports.

When considering underwater photography, we usually think about images of wonderful coral reefs, colourful fish, clear waters and undersea landscapes. In fact, 70 percent of our planet is covered by water on its surface, and, even though 97 percent of this is saltwater, the remaining three percent is freshwater in rivers, streams, lakes, ponds, marshes and groundwater. This is a tiny percentage, but it is very important: Freshwater allows for life on land and is strictly connected with human survival.

Austria offers divine diving at high altitudes in freshwater lakes. Marco Daturi takes us to two beautiful lakes found in the mountains of Styria­­—one that continues to enthrall and one which has recently been closed for conservation and protection.

We walked nearly a mile along the riverbank before finding a place where we could easily enter with our heavy equipment. The rotting carcasses of dead fish lay along the banks, and the associated stench was overpowering. It was late September 2010, and we had come to photograph an enormous migration of sockeye salmon, the largest run of sockeye in a century. We had already photographed in quiet, shallow creeks, capturing images of individual fish or small groups arriving at their final destination hundreds of miles from the sea. Today, our goal was more ambitious: to capture underwater images of the huge aggregation of salmon battling the swift current of the Adams River.

Carrying all we would need for the next five days, our expedition team travelled some 65 kilometres through shallow, meandering channels in small power boats. We eventually reached Jugu Juga, the small island which was to be our home for the next two days. As we unloaded our equipment and started to pitch camp, a bull elephant with tell tale ‘tears’ staining his face repeatedly charged us, only veering off when our guide beat two metal plates together. The strong smelling discharge, rich in testosterone, running down his cheeks announced that he was in 'musth'.

This was my introduction to the “really wild”— the Okavango Delta in Botswana.