Loch Ailort is a sea arm with a town of the same name at the end, on the west coast of Scotland. This coastline is very sparsely populated, only occasionally one comes across a farm or hunting lodge. Algae grow on the bottom of Loch Ailort, which means that this water is part of the so-called 'photic zone'. That zone can range from just a few inches deep in muddy water to around 200 m depth in open ocean water. But we are here on the edge of the European continent. Just a skirt of the 'continental shelf', and then comes the actual ocean floor: the 'abyssal plain', with deep oceanic trenches. In these deepest parts of the ocean, only specialized organisms, who are able to withstand the high pressure, can survive.