20% off Suunto Computers

For a limited time, bring in any old dive computer and receive 20% off any Suunto dive computer, including the Eon Steel, Eon Core, the new D5, and the rest of the D-series. Savings of up to $270! These are by far our staff's preferred computers and we are confident that you will love them too. Almost any dive computer applies, offer ends 8/31. 

Free Aqualung Octo or AirSource 3

Take advantage of Aqua Lung's limited time offer: purchase any qualifying Aqualung regulator and BCD, and you'll get a free matching Octo or AirSource 3! With this deal you can save up to $245 and walk away ready for your next dive trip. Offer ends October 31st. 

August Social: Empowering the New Generation of Ocean Stewards

From completing their scuba certs, exploring the reefs, conducting plankton tows, identifying microplastics, and learning about the plight of sea turtles, these students are becoming armed with the knowledge and conviction to make positive change. Learn about how you can assist in the growth of aspiring marine scientists and ocean advocates. Thursday, August 29th at 6:30pm at Ocean First. More info.

Special Nitrox-Plus Class

We all want our dives to last as long as possible, but between nitrogen build-up and air consumption, new divers often find themselves at their safety stop while the rest of the group is still enjoying the dive. In our new Nitrox-Plus class, not only will you walk away with a nitrox certification, you will learn more about how to maximize your comfort, safety, and time in the water. Compared to air, diving on enriched air nitrox (EAN) increases your no-decompression limits, enhances your safety, and reduces the required length of your surface intervals. In Nitrox-Plus, you will also learn breathing skills and techniques to help minimize your air consumption and perfect your buoyancy. 

Upcoming classes: Wednesday, September 4th from 6-9pm and Sunday, September 8th from 8:30-11:30am. Classroom only, no pool time required. Same tuition price as the regular Nitrox class. NOTE: Digital material cost ($90) already included for 2019 Open Water Students. 

Dive Blue Mesa Reservoir

Join Ocean First on October 12th as we dive into our first destination in the National Parks system. Put your cold water and altitude dive skills on display at Blue Mesa Reservoir, located in the Curicanti National Recreation Area. It is Colorado's largest lake and often ranked as one of our clearest bodies of water. Altitude and Drysuit certifications are strongly recommended.

  • Altitude Diving course: Thursday, September 12th
  • Drysuit course: Wednesday, September 18th


Below is a list of our regularly scheduled classes. We also offer private classes on an individual basis. 

Monday/Tuesday Open Water Class

Earn your open water certification in three weeks. Classes meet on Monday and Tuesdays for three weeks from 6pm-9pm.

Upcoming Classes:

  • Aug: 5, 6, 12, 13, 19, 20
  • Sept: 9, 10, 16, 17, 23, 24
  • Oct: 7, 8, 14, 15, 21, 22
  • Nov: 4, 5, 11, 12, 18, 19
  • Dec: 2, 3, 9, 10, 16, 17

Weekend Open Water Class

Earn your open water certification in two weekends. Classes generally meet on the first and second Friday, Saturday, and Sunday of the month. Friday from 6pm-9pm, Sat & Sun 10am-1pm.

Upcoming Classes:

  • Aug: 2, 3, 4, 9, 10, 11
  • Sept: 6, 7, 8, 13, 14, 15
  • Oct: 4, 5, 6, 11, 12, 13
  • Nov: 1, 2, 3, 8, 9, 10
  • Dec: 6, 7, 8, 13, 14, 15

Semi-Private Weekend Open Water Class

Earn your open water certification in two weekends with personalized private instruction for you and your family or friends. Classes generally meet on Friday-Sunday. Fri from 6pm-9pm, Sat & Sun from 10am-1pm.

Upcoming Classes:

  • Aug: 16, 17, 18, 23, 24, 25
  • Sept: 20, 21, 22, 27, 28, 29
  • Oct: 18, 19, 20, 25, 26, 27
  • Nov: 15, 16, 17, 22, 23, 24
  • Dec: 13, 14, 15, 20, 21, 22

Accelerated Open Water Class

Complete your open water certification in one weekend! Ask about eligibility. Classes meet the last Tuesday from 6:30pm-8:30pm, Friday from 6pm-9pm, Saturday and Sunday from 9am-4pm of each month.

Upcoming Classes:

  • Aug: 20, 23, 24, 25
  • Sept: 24, 27, 28, 29
  • Oct: 22, 25, 26, 27
  • Nov: 19, 22, 23, 24
  • Dec: 18, 20, 21, 22

Open Water Practice Sessions

All current open water students are invited to our free open water practice sessions on select Saturday afternoons and Sunday mornings, where students can work on their comfort and skills in the pool before their open water dives. Please call ahead to ensure your space. 

Upcoming Dates:

  • Aug 10th 1-3pm
  • Aug 25th 9-11am
  • Sept 14th 1-3pm
  • Sept 22nd 9-11am
  • Oct 13th 9-11am
  • Oct 26th 4-6pm
  • Nov 10th 9-11am
  • Nov 23rd 1-3pm
  • Dec 14th 1-3pm
  • Dec 22nd 9-11am

Scuba Skills Update

Refresh your scuba knowledge before your next open water dive. This three-hour class will re-introduce you to your dive skills so you can have a safe and worry-free dive trip.

Upcoming Dates:

  • Aug 14th 6-9pm
  • Sept 11th 6-9pm
  • Sept 21st 3:30-6:30pm
  • Oct 9th 6-9pm
  • Oct 26th 9-12pm
  • Nov 13th 6-9pm
  • Nov 23rd 3-6pm
  • Dec 11th 6-9pm
  • Dec 21st 9-12pm

Group Try Scuba Class

Get your feet wet in our exciting introductory two-hour Try Scuba class. Everything is included, just bring your bathing suit!

  • Aug 7th 6:30-8:30pm
  • Aug 18th 1-3pm
  • Sept 4th 6:30-8:30pm
  • Sept 15th 1-3pm
  • Oct 2nd 6:30-8:80pm
  • Oct 13th 1:30-3:30pm
  • Nov 6th 6:30-8:30pm
  • Dec 4th 6:30-8:30pm
  • Dec 15th 1-3pm

Freediving Class

Learn how to safely explore the underwater world on a single breath in our Level 1 Freediving class. Class is generally held on the first three Thursdays of every month. 

Upcoming Dates:

  • Aug: 1, 8, 15
  • Sept: 5,19, 26 
  • Oct: 3, 10, 17
  • Nov: 7, 14, 21
  • Dec: 5, 12, 19

Freediving Clinics

Our monthly freediving clinics are designed to help freedivers fine-tune their skills and learn new techniques and concepts emerging in the sport. Certified freedivers only unless otherwise specified. The drop-in cost is $20, or free for Freediving Club Members.  

Upcoming Clinics (topics TBA)

  • Aug 24th: Open Practice
  • Sept 21st: Dynamic No Fins (DNF)
  • Oct 19th:  Competitive Freediving

Scuba Rangers

Introduce your child (ages 8-12) to the underwater world with Scuba Rangers! Start with the developmental program and then move into the specialty programs. Learn more.

Upcoming Developmental Programs: 

  • 10/17, 10/24, 11/7, 11/14, 11/21 - Thursdays 5:30pm - 7:30pm

Upcoming Specialty Days:

  • Wreck Ranger: 8/22 from 6-7:30pm ($60 per Ranger) 


Aurora Reservoir, Colorado

Complete your certification dives closer to home at Aurora Reservoir, only an hour from Boulder. Summer water temperatures are generally 65-70ºF. Available July through October.

Upcoming Dates:

  • June 22-23
  • July 27-28
  • Aug 24-25
  • Sept 28-29

Blue Hole, New Mexico

Located in Santa Rosa, New Mexico along old Route 66, the Blue Hole is an 80ft deep natural sinkhole filled with cool, crystal clear springwater. Trips run year-round.

Upcoming Dates:

  • Aug 17-18
  • Sept 21-22
  • Oct 26-27
  • Nov 23-24
  • Dec 21-22

Homestead Crater, Utah

Complete your dives in the geothermally heated Homestead Crater in Midway, Utah. The toasty 95ºF water makes this a truly unique dive experience. Trips run from the fall through the spring.

Upcoming Dates:

  • Oct 5-6
  • Nov 2-3
  • Dec 7-8

Cozumel, Mexico

Complete your open water dives in the warm waters of Cozumel. Fly in on Saturday, have five days of diving, and return on Saturday. Open Water students who choose to complete their Open Water certification dives on this trip can apply the certification fee towards the overall trip cost. Trips run Jan/Feb and Sept/Oct. Visit our Upcoming Adventures page for more information.

Looking for something more exotic?

Ocean First Travel offers a variety of group trips to exciting international dive destinations, and are able to help plan a custom trip for all types of divers.


Below is a list of our regularly scheduled continuing education courses as well as additional SSI specialties that can be scheduled on an individual basis. 

Enriched Air Nitrox

Nitrox allows for longer bottom time and larger safety margins. One of our most popular con-ed courses, and can be completed without pool time. Class times are from 1-4pm

Upcoming Dates:

  • Aug 3rd 
  • Sept 7th
  • Oct 5th
  • Nov 2nd
  • Dec 7th

Ecology Programs

These programs offer a wealth of knowledge about different aspects of the underwater world, including how to identify fish based on physical appearance and behavior, the life-cycles of sea turtles, the unique reproductive cycle of corals, and how human behaviors impact the marine environment. Class generally runs from 6-8pm.

  • Aug 21st - Sea Turtle Ecology
  • Sept 18th - Marine Ecology
  • Dec 18th - Shark Ecology

React Right

Learn the the basics of First Aid, CPR, AED and Oxygen administration in diving emergencies and how to properly evaluate an emergency situation. Required prerequisite for Stress & Rescue. Class runs from 5:30-9:30pm. 

Upcoming Dates:

  • Aug 8th
  • Oct 17th

Stress & Rescue

Learn how to avoid, recognize, and solve problems on the surface and underwater and be prepared for an unexpected emergency. Class time is from 6-9pm for three days in a row. 

Upcoming Dates:

  • Aug 26-28th
  • Oct 28-30th

Science of Diving

This program provides an in-depth and detailed study of physics, physiology, decompression theory, the aquatic environment and diving equipment. It is required training for most SSI Dive Professional programs.

Upcoming Dates:

  • Sept 23-25th

Underwater Navigation

Learn how to use a compass, natural navigation skills, estimate distances, perform search patterns, and find your way back to the exit point. Class time is from 10am-12pm.

Upcoming Dates:

  • Aug 3rd
  • Sept 7th
  • Oct 5th
  • Nov 2nd
  • Dec 7th

Wreck Diving

Wreck dives offer a glimpse into the past and a hearty history lesson. Learn how to stay safe while navigating these exciting nautical artifacts. Class time is from 10am-12pm.

  • Aug 17th
  • Sept 21st
  • Oct 19th
  • Nov 16th
  • Dec 21st

Perfect Buoyancy

Proper buoyancy control is best mastered with proper training. The Perfect Buoyancy course will teach you how to reduce your effort and improve air consumption underwater, while preventing you from accidentally damaging the reef. Class time is from 6-9pm. 

Upcoming Dates:

  • Sept 26th
  • Oct 24th

Deep Diving

This course will give you the knowledge, skills, and experience to safely dive to deeper depths. Class time is from 12-2pm.

Upcoming Dates:

  • Aug 4th
  • Sept 8th
  • Oct 6th
  • Nov 3rd
  • Dec 8th

Night & Limited Visibility

This course will teach you about planning and conducting safe night and limited visibility dives. Class generally runs from 2-4pm

Upcoming Dates:

  • Aug 4th
  • Sept 8th
  • Oct 6th
  • Nov 3rd
  • Dec 8th

Waves, Tides, and Currents

The motion of the ocean can have a big effect on your enjoyment of a dive. This course will teach you how to interact with a variety of water conditions. Individually scheduled.


Boat Diving

This course covers the knowledge you need to make your first boat diving vacation a true success, and how to prepare for diving from all sizes and types of boats. Individually scheduled.


Drysuit Diving

With a Dry Suit Diving speciality course, never fear cold water again! Learn the basics of dry suit diving in this specialty course, and ensure your comfort and safety underwater. Typically individually scheduled. 

Upcoming Class: Wednesday, September 18th  – Join us at Blue Mesa Reservoir on October 12th to put your new skills to use! 

Photo and Video

This program teaches you the skills needed to dive with an underwater camera, and provides the in-depth knowledge and experience required to properly use, maintain and store your equipment. Our goal is help you capture your amazing underwater experiences. Individually scheduled. 

Equipment Techniques

Become one with your Total Diving System. In this course, you will learn about equipment selection, care and maintenance of your gear, and proper gear storage. Your equipment will thank you! Individually scheduled. 

Altitude Diving

When diving at altitudes higher than 1000’, your dive table changes. Altitude Diving teaches you how to safely plan dives at high altitudes. Individually scheduled. 

Upcoming Class: Thursday, September 12th  – Join us at Blue Mesa Reservoir on October 12th to put your new skills to use!