Original sentence: Evidence of its existence is largely anecdotal, with minimal, and much disputed,  photographic material and sonar readings:  there has not been any physical evidence (skeletal remains, capture of a live animal, definitive tissue samples or spoor) uncovered as of 2008.Local people, and later many around the world, have affectionately referred to the animal by the diminutive Nessie (Scottish Gaelic: "Niseag") since the 1950s
Edited sentence: Despite the inclusion of "monster" in the animal's common name, local people, and later many around the world, have affectionately referred to the animal by the diminutive Nessie (Scottish Gaelic: "Niseag") since the 1950s.Evidence of its existence is largely anecdotal, with minimal, and much disputed,  photographic material and sonar readings:  despite extensive investigation, there has not been any physical evidence (skeletal remains, capture of a live animal, definitive tissue samples or spoor) uncovered as of 2008