The book doesn't provide page numbers for scenes, and the location of the scene can vary depending on the edition of the book you're using.
To find the beach scene, you can look for these clues:
* Katniss and Peeta are in District 4: The scene takes place after they are taken from the Capitol and are being shown around the districts.
* They meet the oyster fishermen: This encounter is a key part of the scene and provides a crucial detail about the District's livelihood.
* Katniss is curious about the ocean: This is a central theme in the scene, as she's never seen the ocean before.
By searching for these clues, you should be able to locate the beach scene in your copy of Catching Fire.