Explore Natural Overhead Environments Within the daylight zone Cavern Diving is SSI’s premier entry-level natural overhead-environment program. Designed to take your diving beyond open water, it develops disciplined line handling, conservative gas management, precise buoyancy control, and effective team communication. Remaining strictly within the daylight zone and utilizing simple single-line navigation with the rule of sixths, you will learn to evaluate cavern sites, deploy continuous guidelines, and manage emergencies. Through a combination of digital learning and practical, performance-based training, you’ll gain the confidence and competence needed for safe overhead exploration. Discover Local Course Dates Find your next diving adventure on Scubago - whether it's near you or at your travel destination - and book directly with the center of your choice. Powered by Sort by: Date ascending Date ascending Date descending Price ascending Price descending Distance ascending Distance decending View on Map Automatic 50 km 100 km 500 km Worldwide Facts and Training Standards Amount of Academic Sessions 7Amount of Pool/Confined Water Sessions 1Amount of Open Water Sessions 4Maximum Training Depth 40 m / 130 ftSuggested duration (h) 12Certification Prerequisites Open Water Diver certification, Minimum 24 logged divesSSI Standards Languages English Master Essential Overhead Skills Here are the benefits you can expect from attending this training program: Install and follow a continuous guideline while applying the rule of sixths Maintain precise buoyancy, trim, and non-silting propulsion techniques Respond to emergencies and protect fragile natural formations Continue Your Overhead Training Expand your limits with advanced programs like Cave Diving, Limited Mine Diving, and Extended Range. Extended Range Wreck DivingDo you dream of exploring ancient ships or famous world war wrecks? Become an SSI Extended Range Wreck Diver and learn how to go wreck penetration diving up to a maximum depth of 40 meters. Start this exciting SSI advanced wreck diving course online today!12Suggested duration (h)4Open Water SessionsCave DivingGo further than you ever have before and experience the thrill of underwater cave diving. Learn to explore caves with a single navigational choice in the SSI Cave Diving program. Join the exciting world of technical diving today!18Suggested duration (h)6Open Water SessionsLimited Mine DivingBuild your overhead mining foundation with SSI. Master single-line navigation, the rule of sixths, and essential safety protocols in flooded underground structures.12Suggested duration (h)4Open Water Sessions More Information Training Prerequisites SSI Entry-Level Programs – Open Water Diver, Freediver, or Mermaid require students to complete a water fitness evaluation prior to open water training. The goal of this evaluation is to determine a comfort level baseline consisting of: Swim Assessment Survival Float Technical Requirements To start training, students must create a MySSI profile. This can either be done via the SSI website at www.divessi.com/register or by installing the MySSI App. Simply download the app for either iOS or Android, set up the user profile, and access the world of diving in minutes! The MySSI App safely stores everything in one place, online or offline – training materials, logbook, and certification cards. This includes Recreational Scuba, Extended Range, Freediving and Mermaid. Training Center Selection & Affiliation Every student must select an SSI Training Center as their “Training Partner” during the course registration process. Affiliation ensures personalized service and a high-quality training experience. Students can also change affiliation or choose to affiliate with multiple Training Centers in their user profile. When affiliating with a Training Center online or via the MySSI App, a Privacy Policy Agreement will be processed to comply with GDPR regulations. Medical & Administrative Requirements Each student or candidate must complete the required SSI Training Record Forms prior to participating in any SSI training program. The forms for minors must be reviewed and signed by a parent or guardian. Responsible Diver Code SSI Responsible Diver Code - Scuba DivingSSI Responsible Diver Code - FreedivingSSI Responsible Diver Code - Extended Range Diving Diver Medical Statement & Questionnaire or Physician’s Approval to Dive (where required) Training Assumption of Risk, Liability Release, & Liability Release, & Hold Harmless Agreement (where required / not applicable within the European Union) Program-specific Completion Record (done by the Instructor prior to certification) Training Course Costs Training consists of various components which are either charged singly or as a package depending on the selected Training Center. The components are: Training Materials / Digital Kit Tuition for Academics and In-Water Training Open Water Training Dives Certification Discover the Wonders of the Deep with SSI's Blog Join us on an exciting journey of discovery and learn more about exhilarating diving adventures, dedicated conservation initiatives, and innovative educational opportunities that will help you illuminate the extraordinary beauty of the underwater world. Let's explore the underwater world together and delve into the hidden wonders beneath the gentle waves. Malta Diving: 10 Best Dive Sites in Malta, Gozo & Comino 2026-09-28 Plan your Malta diving trip with 10 standout sites across Malta, Gozo, and Comino, from blue-lit caves and shore dives to historic wrecks. Mermaid Skills: Master Buoyancy for Effortless Movement 2026-09-24 Improve your mermaid skills with practical buoyancy tips for better body position, breathing, control, and graceful movement underwater. Scuba Diving Breathing: How to Stay Calm and Conserve Air 2026-09-22 Improve scuba diving breathing with calm, steady techniques that help you relax, support buoyancy, avoid common mistakes, and conserve air. Featured destinations that are ideal for technical diving SSI’s Extended Range allows you to go beyond the limits of recreational diving. This extensive compilation of globally recognized tec diving programs will equip you to go decompression diving, explore more challenging environments, and use new equipment configurations. © iStock/MartinM303Scotlandin the summer months, you can can expect to see sharks in ScotlandLearn more © iStock/ferrantraiteMexicoDiving in Mexico is a breathtaking, world-class experience. This country offers many adventures and a landscape full of natural wonders.Learn more © iStock-LunamarinaFloridaThe Sunshine State Florida offers many great and divers dive sites from the tropical Florida Keys to deep shipwrecks and crystal clear freshwater springs.Learn more © iStock/RudyBalaskoItalyItaly is a peninsula in southern Europe, famously shaped like a boot that is surrounded by three parts of Mediterranean - offering various dive sites.Learn more © iStock/daniloviPhilippinesThe Philippines is an archipelago composed of over 7,000 islands in three main regions: Luzon, Visayas and Mindanao.Learn more © AdobeStock/saman527Sri LankaSri Lanka has a warm and tropical climate and is home to an amazing range of land animals and marine life which makes up to a great dive destination.Learn more