SNORKEL LESSONS: Jack’s Diving Locker also offers snorkel lessons for those who want some instruction. Lessons are conducted in our training pool and offered most days at 10 a.m. or 1 p.m. It takes about an hour and a half. Instructors will cover gear handling and fit along with skills such as clearing water from a mask or snorkel and proper use of fins. For those who want to try a little bit more, free diving techniques will be introduced so you can learn how to go under the surface and take a closer look. Cost: $50.