Author Archives: SDI/TDI/ERDI

Pre Dive Checklist

Tweet Before you enter the water, review your ABCs. A – Make sure your Air is on by inhaling from your primary second stage while looking at your pressure gauge. If the needle drops significantly when you inhale, it indicates … Continue reading »

The Non-Certified Divers

The origins of the recreational scuba industry can be found among a group of forward thinking individuals who brought standardized scuba training to the public.

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3 Mistakes Most New and Veteran Divers Make

This article will discuss 3 mistakes that are common for new divers, how to avoid them, and how an experienced diver could easily end up making the same mistake.

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Pre-Check before the Pre-Dive Checklist

Getting into the habit of going through a PRE pre-dive checklist well before the dive should be common practice for all divers, regardless of their training or experience level.

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75,000 Visits Worldwide to this month.

For the first time ever, the SDI/TDI/ERDI website ( has drawn over 75,000 visitors inside a month. The number of visits to SDI/TDI/ERDI’s website rose by 57% from 48,000 a year ago to 75,367, to be more exact. Across the … Continue reading »

Training Updates and Important Reminders

As of 2014, the SDI-TDI-ERDI Training Department has been conducting LIVE webinars covering the 1st and 2nd quarter training updates. These updates were offered at various dates/times to fit the scheduling needs of our members on a global scale. The … Continue reading »

WTH is a Scuba Fail?

We want your Scuba Fails!

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Surface Supplied Air in Public Safety Diving?

What makes surface supplied air diving so much better for public safety divers over scuba, you ask?


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3 Public Safety Dive Skills to Practice on Every Dive

The phrase “practice makes perfect” is something that most people have heard at some point in their lives. This phrase rings true within the public safety diving community. If we do not refresh our memories and work through basic skills with regularity, those skills can become difficult or even forgotten.


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ERDI Training Turns into Live Operation

During an ERDI open water training session in Taiwan, a group of public safety divers came upon a pair shoes just sitting on an otherwise empty bridge.


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