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Underwater Phantaseas: Scuba Training in the Denver Metro Area

At Underwater Phantaseas in Lakewood, CO offers PADI scuba certification courses and scuba training, helping Denver locals confidently explore the underwater world. Whether you are brand new to diving, and need your Open Water Certification, or you're ready turn your passion for diving into a professional career, our experienced dive team is here to guide you every step of the way.

For more than 40 years our PADI 5 Star Dive Center and Instructor Development Center has proudly served the Denver Metro Area. Our scuba shop offers a full range of PADI course, scuba equipment, and dive travel opportunities. From classroom learning and pool sessions to open water certification dives and international dive trips, we are committed to building confident, skilled divers who are prepared for real-world conditions.

Become a PADI Diver

Start with Open Water Dive, build confidence through Advanced + Rescue, and explore professional pathways with a mentor-led approach.

Colorado Advantage

Training at elevation strengthens fundamentals like buoyancy, planning, and comfort—skills that translate beautifully to ocean diving.

Gear & service

Rentals, scuba equipment sales, certified service, and air fills - everything you need in one place.

Dive Travel

We organize and escorted group scuba trips to world-class diving destinations

PADI Scuba Certification Courses for Every Level

We offer a complete lineup of PADI scuba certification courses, making it easy to progress at your own pace. Beginners often start with the PADI Open Water Diver course, which introduces essential skills, equipment use, and dive theory. From there, many divers continue into PADI Advanced Open Water to expand depth limits and gain experience in specialty dives.

For those seeking greater self-reliance and awareness, the PADI Rescue Diver course focuses on problem prevention and emergency response. We also offer Emergency First Response training, which covers CPR and first aid skills valuable both in and out of the water.

Divers returning after time away often benefit from our PADI ReActivate course, designed to refresh skills and rebuild confidence. We also provide PADI Discover Scuba experiences, snorkeling courses, scuba birthday parties, and private learning options that allow you to complete academics on your schedule.

Get Certified Advanced Open Water Ask about the right path

Specialty Courses Tailored to Mountain and Travel Diving

One of the strengths of Underwater Phantaseas is the wide range of specialty courses we offer. These courses allow divers to develop specific skills and explore areas of interest. Popular options include Enriched Air Nitrox, Deep Diver, Wreck Diver, Drysuit, and Project AWARE environmental courses.

We also offer Altitude Diver training, which is  a must for Colorado-based divers. Understanding the affects of altitude on planning and safety is critical when diving in mountain lakes, or preparing for travel after high-altitude living.

Professional Scuba Training and Career Paths

For divers who want to take their passion further, we offer professional-level scuba training. As a PADI 5 Star Instructor Development Center, we guide candidates through Divemaster training and Instructor development programs. These courses are ideal for those interested in leadership, education, or a career in the dive industry.

Turn your love for diving into a career!

A Full-Service Dive Center in Lakewood

Underwater Phantaseas is more than a training facility. We are a full-service dive center supporting every aspect of your diving journey. Our dive shop offers scuba gear sales from trusted brands, including masks, fins, wetsuits, BCDs, regulators, dive computers, torches, and accessories.

We also provide equipment rental for scuba and snorkeling, making it easy to train or travel without committing to full gear purchases right away. Our onsite, certified technician performs equipment servicing and annual inspections on major brands, helping ensure your gear remains safe and reliable.

Air fills and expert advice are always available, and our staff takes the time to help you choose equipment that fits properly and performs well in the environments you plan to dive.

Scuba Equipment Sales Scuba Rental Equipment Scuba Equipment Service Air Fills

Dive Trips

Group scuba diving trips from Denver to world-class dive destinations such as Cozumel, Roatan, Bonaire, Fiji, Bali, and Egypt.

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