Complex sentence: In a 2013 study the WWF identified the world's 10 most dangerous waters for shipping, but the Bermuda Triangle was not among them and contrary to popular belief, insurance companies do not charge higher premiums for shipping in this area.
Split into simpler sentences: In a 2013 study the World Wide Fund for Nature identified the world's 10 most dangerous waters for shipping, but the Bermuda Triangle was not among them. Contrary to popular belief, insurance companies do not charge higher premiums for shipping in this area.