Unlike wetsuits, drysuits are filled with air. During your drysuit course, your instructor will teach you how to control the air in your drysuit along with your buoyancy.

You'll also learn about different types of drysuits, basic drysuit repairs and maintenance.

PADI eLearning makes it easy to fit scuba lessons into a busy schedule. Complete the independent study part of your course whenever, wherever it's convenient for you. Work at your own pace, online or offline, using a computer or mobile device. Connect with your instructor for inwater training, or whenever you have a question.

• eLearning time commitment: 2-4 hours

Price of the course includes dry suit rental.