/home/cms_data/dfault/photos/stories/id/4/5/022720121226305107145/s_ERRORHigh school teacher Mark Fontenot, right, leads a dissection of a male salmon shark by his biology class Wednesday. The shark became tangled in fisherman Jason Shull’s gillnet. It weighed over 200 pounds and measured about six feet. The students cut open the specimen at the boat harbor fuel dock, identifying organs including the heart and intestines. Helen Edwards photo.