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AIDA

AIDA 2: Going Deeper

Ready to commit beyond an intro? The second level is the real foundation course, where technique, theory, and self-rescue come together.

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9 min read· Intermediate

If the first level is a taster, the second is the proper meal. Many divers consider it the true entry point into the sport because it covers everything you need to dive safely with a buddy in good conditions. It is also a common prerequisite for joining guided sessions at dive centers around the world.

Technique that travels

At this stage you stop just trying things and start refining them. Expect focused work on:

  1. An efficient duck-dive that gets you head-down with minimal effort.
  2. A relaxed, streamlined finning style that conserves oxygen.
  3. Reliable equalization on descent so your ears stay comfortable.
  4. Free immersion, where you pull yourself down and up along the line.

Safety becomes a core skill

A defining feature of this level is learning to be a genuinely useful buddy. You practice supervising a partner's dive, spotting the warning signs of trouble near the surface, and performing a rescue tow and recovery breaths. This is the moment freediving safety shifts from something an instructor does for you to something you can do for someone else.

Buddy skills must stay sharp

Rescue technique fades without practice. Rehearse recovery procedures regularly with your dive partner so they are automatic if you ever truly need them.

Theory and targets

Classroom sessions introduce the physiology behind breath-holding, basic physics of pressure, and how to plan a safe dive day. Performance targets for static breath-hold and depth step up noticeably from the intro level but remain well within reach for a healthy, motivated student. As always, the exact numbers vary by edition, so treat any figure you see as approximate and confirm with your instructor.

Log your dives

Start recording depths, hold times, and how you felt. Patterns in your logbook reveal what helps you relax and where your equalization or technique still needs work.

Finishing this level, you should be able to plan and enjoy safe recreational freedives with a similarly trained buddy. From here, the advanced level opens the door to greater depth and more demanding skills.

Key takeaways

  • The second level is widely treated as the foundational freediving certification.
  • You build proper finning, duck-dive, equalization, and buddy rescue skills.
  • Theory covers physiology, safety, and the basics of how the body adapts.
  • Depth and static targets step up but remain conservative; confirm specifics locally.