PADI Junior Open Water By admin | 08/18/2010 - 5:11 pm |08/19/2010 Key Largo Lobster Diving, Key Largo Scuba Diving, PADI Junior Open Water Leave a comment Meet Ethan Erb. He is 11yrs old from Fredericktown, PA. He was certified PADI Junior Open Water on August 9th and has done 24 dives already. Ethan is a 11 year old Certified PADI Junior Open Water Scuba Diver