Simplify the following text for a Grade 1 native English-speaking person.
Original: Mossman was once the seat of the former Shire of Douglas but now falls under the amalgamted Cairns Region which is presently administered from both Cairns and Mossman . Mossman is rich in sporting clubs such as the Mossman Sharks rugby league club and the Port Douglas AFL club .
Simplified: It is on the Mossman River .