Man's Heritage: Realm Of The Golden Eagle Pearl, 8.30pm Award-winning wildlife film-maker Michael Schlamberger tackles the European mountain range, the Alps, in this stunning documentary about Alpine animals. Based on a concept by Walter Koehler, Realm Of The Golden Eagle took 650 shooting days just to get the raw footage, and five years of planning and production to complete. It also saw Schlamberger assemble a large camera crew from throughout Europe, including Italy's Rolando Menardi and Switzerland's Markus Zeugin. The result is simply breathtaking. Formed 75 million years ago when the continents of Africa and Europe collided, forcing the Earth's crust skyward, the Alps are a dynamic mountain range. A few species have survived from before this period but many of them were forced to relocate here from elsewhere. The ibex and chamois come from the Himalayas while marmots are originally from Siberia. Mountain hares and ptarmigans are also not native to the region. This rich diversity of wildlife comes from the Alps' unique topography of peaks and valleys that offer numerous micro-climates, many of which have never been reached by humans before. National Geographic: Pursuit Of The Giant Bluefin World, 10pm Pelagic fish such as the marlin, tuna, sailfish and swordfish are at the top of the marine food chain. However, rampant over-fishing and uncontrolled pollution over the years have reduced their numbers to dangerously low levels.