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Sean Harrison

About Sean

A little about Sean – As a long time scuba diver and an avid outdoorsman, Sean enjoys a lot of activities nearly all of which involve being outdoors. At the office, Sean deals with almost everything from training, RSTC, Insurance, and everything else that involves company relations with other agencies, manufactures and the industry as a whole. During most of his off days when not at the beach with his sons, you can find Sean enjoying kayak fishing, canoeing, cycling and walks through local parks introducing his kids to the outdoors and helping them identify the flora and fauna. “I have been fortunate enough to live and travel around the world and one day will be able to take my sons to some exotic destinations.”

Explore Articles by Sean

TDI Cavern Discovery

The allure of a new environment is always tempting, especially when you are diving in clear water and it appears "easy" to just poke your head in. Let’s face it, divers are explorers and adventurers - just poking our head in to see is not going to be enough. Don't do it unless you are properly trained or have a TDI Cavern Discovery Instructor with you.
October 11, 2017/by Greg Toscano

Miami-Dade Fire Rescue Q&A

With the great response of the video just released, Miami Dade, A Closer Look, we figured we would do a follow-up question and answer session because like any good movie, the books are normally even better. There were only so many details we could include in the movie and now it's time for the rest of the story.
September 20, 2017/by Greg Toscano

Miami-Dade, A Closer Look

ERDI went on a ride-along and got a closer look into the Miami-Dade Fire Rescue team. What you are about to watch are the results of that ride-along.
August 16, 2017/by Greg Toscano

What’s the Right Age to Certify My Kids

Now that summertime is in full-swing you might be thinking about where to go on your next family vacation. This might mean a dive trip comes to mind, are your kids Junior Divers yet? How do you know if they're ready? Spoiler Alert: it's not just about their next birthday.
July 27, 2017/by brittany hadfield

ISO/EUF Renewal Certificate

June 20, 2017/by brittany hadfield
Your Part of the Problem

You’re Part of the Problem

Scuba professionals, you’re part of the problem. Good news is, you’re also part of the solution.
September 20, 2016/by SDI/TDI/ERDI
ERDI Equivalency Chart

Public Safety Diver Equivalences from Dive Training Agencies, DRI, LGS, PADI, SSI, IANTD, PSDA, NAUI, RESCUE 3

This chart compares ERDI certifications with other public safety dive training agencies
September 14, 2016/by SDI/TDI/ERDI

The #1 Reason Scuba Divers Die

The key question is, how to stop this from happening?
August 31, 2016/by jamescouncill

FDIC 2016 Follow Up

If you are in the public safety community and you have never had the chance to attend FDIC, you should make the effort.
May 17, 2016/by jamescouncill

Leading Causes of Death for Public Safety Divers

Over the past year or so, I have been on a mission to figure out what the health risks are to public safety divers, what is causing injuries, why they are dying, and what ERDI can do to help prevent these accidents from happening.
March 16, 2016/by jamescouncill

Scubility Taken to All Corners of the Globe

Teaching or assisting divers with disabilities requires an alternative view and approach but in the end is extremely rewarding.
December 2, 2015/by jamescouncill

3 Shorts

Recently, there has been a large increase in the number of accidents involving dive boats backing down on or running over divers. This of course is not limited to the US; these cases span the globe.
October 7, 2015/by jamescouncill

The Difference Between Tech and Sport

Some of the differences between technical and sport, if applied by sport divers, would actually make sport divers better divers.
September 2, 2015/by jamescouncill

4 Things I wish I’d Known Before My First Tech Dive

Make an equipment check list and go through it before every dive/trip, with tech diving comes more equipment which equals more things to forget.
August 13, 2015/by tdisdiHQ

What’s Your Life Worth? – Part 2

The “What's Your Life Worth?” series is not intended to scare people; it is intended to provoke thought and some introspective viewing as well as self analysis.
August 13, 2015/by tdisdiHQ

What’s Your Life Worth?

For the past 15 years a big part, and not the best part, of my job has been reviewing and analyzing diving accidents and fatalities. These reports span the globe, and cover all ages, genders, and disciplines of diving. Two unfortunate themes are reoccurring: basic skill failure and cutting corners on servicing.
June 10, 2015/by jamescouncill

Which Scuba Certifications Do You Need and Why

Taking a dry suit course will not only make your diving in tropical waters more comfortable, it will also extended your diving season.
So you sat all winter, and for some of you it has been a rough winter, looking at your diving photographs, reading the dive magazines, and posting on social media all your diving dreams and fun stories, just waiting for the water to warm up. Why wait?!
May 5, 2015/by jamescouncill

4 Tips for Getting Tethered Safely

Interview with Deputy District Chief for Chicago Fire Department, Ron Dorneker, who is in charge of the Chicago Fire Department Marine & Dive Operations since 2001.
April 21, 2015/by jamescouncill

ERDI Public Safety Diving Health Project

ERDI was invited, along with several other industry professionals, to attend a workshop that focused on the health and well being of public safety divers and their support teams.
February 17, 2015/by jamescouncill

Diving in Extreme Weather

It is interesting to see how various teams around the globe prepare and train for seasonal weather changes.
December 22, 2014/by jamescouncill

Dive Computers vs. Dive Tables

Picture this - I’m riding to the dive site in my horse and buggy, and calculating my no decompression limits on my abacus. If you think that takes time, that’s nothing, it’s chiseling my dive plan into my stone tablet.
September 2, 2014/by jamescouncill

Signs and Symptoms of Decompression Sickness

A brief discussion of decompression sickness (DCS) symptoms, as well as, how to prevent and immediate treatment.
August 13, 2014/by SDI/TDI/ERDI

3 Questions You Should Never Ask Your Instructor

There really is never a bad question but always think about the question before you ask it; put yourself in the instructor's fins. Questions are an important tool for instructors when teaching, they let the instructor know what the diver is thinking and chances are good that if one person has a question, others have may have the same but are hesitant to ask.
July 15, 2014/by SDI/TDI/ERDI

Advanced Certified or #AdvancedDiver

The first question you need to ask yourself is, am I getting advanced certified so I can show my “advanced card” or so I can truly be a more capable diver?
July 1, 2014/by SDI/TDI/ERDI

5 Things You Can Practice on Every Dive

Here are five tips you should do on every dive whether you dive every day or once a year. - #AlwaysLearning
July 1, 2014/by SDI/TDI/ERDI

Diving Without a BCD

by Sean Harrison, VP of Training

As article topics were being…
January 7, 2013/by tdisdiHQ

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