What is the setting of book mudshark by gary pualsen?

There seems to be a misunderstanding. There is no known book titled "Mudshark" by Gary Paulsen. It's possible you are thinking of a different title, or perhaps the author's name is incorrect.

Gary Paulsen is a well-known author who wrote numerous books for children and young adults, often focusing on survival and nature themes. Some of his most popular titles include:

* Hatchet

* The River

* The Voyage of the Frog

* Dogsong

* The Boy Who Could Fly

If you can provide more information about the book you're interested in, I might be able to help you find the correct title and setting.