SDI Scuba Discovery Program

Your first step into the world of diving

Diving is so magical that it’s hard to explain. Like the first time you breathe underwater, when your brain registers it as a unique and unrepeatable moment. Or when you feel the weightlessness: your body feels light, and floating becomes natural, the closest feeling to flying. It all happens as you discover a new world filled with incredible animals, lively reefs, and silent wrecks that tell stories. No, it can never be fully described. You have to live it, guided and calm, so you can simply enjoy the moment.
The experience begins here.

A New World To Discover

Incredible animals, lively reefs and silent wrecks that tell stories. Every dive feels new and different. Your first descent opens the door to a world that can’t be compared to anything you’ve seen until now, a moment that stays with you.

Simply Breathe

Something as simple as breathing takes on new meaning underwater. The first time you breathe through your regulator becomes a moment you won’t forget. You realize sensations say more than words here, calm, clear and different.

Feel The Weightlessness

Without a doubt, diving is the closest thing to flying. Water’s density makes your body move light and free, letting you float with ease. A new environment that surprises you, quiet, simple and unforgettable.

Start your SDI Scuba Discovery Today

It’s time to start discovering the world of diving

Scuba Discovery is an easy first dive experience. You can begin from home using an SDI eLearning access code, or start directly at a dive center. You’ll learn the basics of your scuba gear before entering the sea, so your first descent feels calm and safe.

eLearning Code

With the free eLearning course, you stay in control. Study at your own pace from home, on vacation, or wherever feels right for you. Explore simple lessons, short videos, and easy quizzes that introduce basic ideas about buoyancy, pressure, equalization, and the underwater world. You can take this training before or after your Scuba Discovery, since it is an additional resource.
Once you register on tdisdi.com, we will help you connect with a dive center where you can enjoy your first moments underwater with calm, confidence, and genuine curiosity.
If you already have an SDI account, please email cs@tdisdi.com and request that the three free courses be placed in your My eLearning account.

Start your FREE eLearning

Diving Center

It all starts with the right dive center. Your scuba journey begins by choosing your SDI Dive Center. From day one, they’ll guide you through every step — from starting your eLearning to completing your practice sessions and training dives, all under the supervision of a certified SDI Instructor. Once you’ve selected your dive center, you’ll purchase your eLearning and dive right in. Learn where It works best for you. Pick a dive center close to home or at your dream vacation spot — wherever you want to begin your underwater adventure, there’s an SDI center ready to welcome you.

Find your dive center

Skills you’ll learn in your Scuba Discovery

Before you enter the water, you’ll learn what matters most to make your dive unforgettable. The experience blends understanding your equipment, short practical exercises, and how we communicate underwater.

Scuba Equipment

You’ll learn what every piece of your scuba equipment does. You’ll see how your buoyancy control device adjusts, how the regulator works, and how to read a pressure gauge, entering the sea with confidence.

Diving Physiology

You’ll understand simple body basics as pressure changes: equalize your ears, never hold your breath, move slowly… Straightforward concepts that are quick to learn and help you enjoy the moment.

Basic Dive Skills

You’ll practice logical, short skills: finning with ease, clearing your diving masks, adjusting posture, and recovering your regulator. Simple drills that give you confidence from the first try.

UW Communication

You’ll learn the essential diver signals we use to communicate with no sound: OK, up, down, stop, and more. These signals are easy, practical, and fun to use from the first dive.

Questions? Let’s dive in!

Who this course is for:

Those who would like to experience the underwater world
Those who would like an introductory course to scuba diving prior to enrolling in the Open Water Scuba Diver course

Course prerequisites:

Minimum age 18, 10 with parental consent
Demonstrate adequate swimming skills and in-water comfort

What you can expect to learn:

During this program, the following topics will be covered… and more!

Basic overview of physics/physiology and how it relates to diving
- Buoyancy
- Pressure
- Equalization techniques
The aquatic environment
- Marine environment
- Marine life expected to encounter at the dive site
Scuba equipment assembly
Underwater communications