Grand Cayman Scuba Diving Experience for Beginners. Learn to scuba dive while on vacation in Grand Cayman, and discover the abundant marine life of this tropical paradise. Start your scuba instruction in the morning with a 2-hour theory and pool session, then hop on a boat in the afternoon and continue your beginner’s course with a 2-hour introductory open-water dive. Keep an eye out for stingrays, manta rays, tarpon, eels, sea turtles and more. Scuba equipment and transport from selected hotels included. Book with us and Save 10%: Grand Cayman Scuba Diving Experience for Beginners.