Nigel Marven is one of the most celebrated zoologists, wildlife adventurer, film maker and a television presenter. He has encountered killer whales, has come face to face with polar bears and has dived with bull sharks. This November,…

Rivers Monsters on Animal Planet A large catfish attacked a teenager in a German lake. A school of piranha devours a busload of passengers that crashed in an Amazonian river. These legends have found their way into literature,…