Diving into dangerous deep sea waters and fishing in freshwater rivers our selection of dedicated programmes uncover some deadly, endangered and prehistoric fish from the 26-foot squid to the trout capable of eating a small dog.

These are no ordinary fish. These are megafish – monsters that defy belief with their enormous proportions, predatory weapons and elusive nature. Over 6-foot in length and weighing over 16-stone these fish are no easy catch and have to be seen to be believed.