The Volcano
- Episode aired 1961
Doc Sturgeon and the Sergeant-Major enlist Diver Dan's aid in an attempt to prevent an underwater volcano from erupting.Doc Sturgeon and the Sergeant-Major enlist Diver Dan's aid in an attempt to prevent an underwater volcano from erupting.Doc Sturgeon and the Sergeant-Major enlist Diver Dan's aid in an attempt to prevent an underwater volcano from erupting.