Narcosis Scuba prepares divers of all skill levels for open sea exploration by giving them the education and equipment they need to safely explore the ocean's criminal underworld. An open water certification course outfits submerged swimmers with a designation from the Professional Association of Diving Instructors, the world's top training organization for scuba diving. Depending on whether you choose an evening, daytime, or weekend class, the curriculum spans one to two weeks and consists of two to four classroom sessions, two dives in an enclosed pool, and a weekend on the open water. Narcosis provides the heavy-duty equipment for each class, so students can leave their harpoon guns at home. However, students must supply their own mask, snorkel, fins, booties, gloves, and weight belt?all of which can be rented from Narcosis for an extra charge. Once they've completed the course, aquatic adventurers can freely probe the briny deep on their own and play the fishbone xylophone during its many undersea musical numbers.