Emergency First Response Every Diver Needs to Know

Emergency First Response Every Diver Needs to Know

By: Manny Lagos | Date: 2026-05-07T09:33:45.628Z

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Emergency First Response is a foundational step that builds confidence and professionalism in every diver. We have found that the best dive buddies are the ones who possess the quiet confidence that comes from knowing exactly what to do.

This training moves beyond just learning medical skills; it creates a mindset of readiness and leadership that makes the entire diving experience safer and more enjoyable. Through this EFR course, you will learn specific primary and secondary care techniques that allow you to stay calm and focused. These skills ensure you become a reliable partner in the water. 

Key Takeaways:

1. The ocean doesn't care about your certification level. Emergency First Response training is what turns you from a panicked diver into someone who can actually save lives.
2. When someone's heart stops, you've got maybe 4-6 minutes before brain damage starts. That's not much time when you're on a boat 30 minutes from shore.
3. Emergency skills deteriorate without practice, so know where your boat's safety gear is stored and refresh your training regularly. 

Read time: 4-5 minutes

What is Emergency First Response (EFR)?

So, what is an EFR? In simple terms, Emergency First Response is a practical training system that teaches regular people (not doctors or paramedics) how to handle medical emergencies effectively. It isn't just another certification to add to your C-card collection. 

The program splits into two main areas: primary care (that's CPR and keeping someone alive) and secondary care (treating injuries that won't kill someone immediately but still need attention). For divers wondering what is an EFR and why they need it, the answer is simple: it gives you the skills to save lives when professional help isn't immediately available.

Emergency First Response in diving situations is extremely useful because you're often far from hospitals, dealing with unique underwater-related medical issues that require immediate action.

Important Emergency First Response Skills for Divers

CPR (Cardiopulmonary Resuscitation): Steps and importance

CPR is absolutely critical, and here's why: when someone's heart stops pumping blood effectively, their brain starts dying in about four to six minutes. That's not much time, especially if you're on a boat 30 minutes from shore.

The technique itself is pretty straightforward once you learn it through proper first response training. Check if they're conscious, yell for help, place your hands on their chest, and start compressions. Push hard and fast – at least two inches deep on an adult, around 100-120 compressions per minute. 

Yes, you might crack a rib. That's okay. Ribs heal, brain damage doesn't.

Rescue breathing and airway management

Sometimes a person has a heartbeat but can't breathe properly. This happens a lot in near-drowning cases where someone's heart is still working, but their airway is compromised. You might need to remove their scuba dive mask to properly assess their breathing and provide rescue breaths.

Tilt their head back, lift their chin, and give rescue breaths while watching their chest rise. If the chest doesn't rise, reposition and try again. Water in the lungs makes this trickier than practising on a mannequin, but the basic principle remains the same.

Basic wound care and managing bleeding

Dive injuries can be anything from minor coral scrapes to serious cuts from boat props or aggressive marine life attacks. Controlling bleeding is often the difference between a minor incident and a medical emergency.

So, what to do if a fellow diver is bleeding profusely? Apply direct pressure. It works for most bleeding but in case it doesn’t, try pressure points. Elevate the injury if possible. And protect yourself, use gloves or barriers to avoid contact with blood. 

Remember: You can't help anyone if you become a victim too.

Recognizing and responding to shock

Shock develops when the body can't maintain adequate blood flow. In diving, this might happen after decompression sickness, severe injuries, or even panic attacks.

Watch for pale, clammy skin, a rapid but weak pulse, and confusion or anxiety. Keep them warm, elevate their legs (unless you suspect spinal injury), and get professional help, FAST. Shock can deteriorate quickly.

Using an Automated External Defibrillator (AED)

Modern AEDs are actually really simple to use. They analyse the heart rhythm and shock only when appropriate. The machine guides you through everything with voice prompts. Convenient, right?

Your job is recognising when to use one, turning it on, and following directions. Many dive operations carry AEDs now because they're so effective when used quickly.

Common Dive Emergencies You Should Be Prepared For

Here are some common scenarios where Emergency First Response in diving is particularly useful:

Near-drowning incidents

• Victim may be conscious but struggling, or unconscious and not breathing
• Your first priority is getting them stable and breathing again

Decompression illness

• Symptoms of decompression sickness vary between people. It can be anything from joint pain and neurological problems to breathing difficulties
• The key is recognizing something's wrong and getting proper medical care quickly

Marine life encounters

• These aren’t usually life-threatening but can be serious
• Jellyfish stings, sea urchin punctures, shark or barracuda injuries each require different treatment

Boat-related injuries

• Actually happen more frequently than underwater emergencies
• Include slipping on wet decks, equipment strikes, cuts from boat hardware etc.

How to Prepare for Emergencies Before You Dive

Preparation beats reaction every time. So follow these steps:

1. Start with an honest assessment: 

Are you mentally and physically ready for this dive? Is your gear working properly? When did you last service that regulator? Have you reviewed you underwater navigation plan?

2. Talk through emergency procedures with your buddy before diving: 

Know where the boat's emergency equipment is located. Make sure someone topside has emergency contact information for everyone in the water.

3. Carry basic signalling devices: 

A whistle, safety sausage, or mirror. Know how to use them. Practice your Emergency First Response skills regularly because they deteriorate without use.

What to Do After an Emergency: Reporting and Follow-up

Your responsibilities don’t end immediately after the crisis passes. You need to document everything in detail like what happened, when it occurred, and what treatment you provided. This information not only helps medical professionals provide the appropriate treatment but also improves safety for future divers.

You should also check on injured parties later if possible and take good care of yourself. Providing emergency care takes an emotional toll and it's normal to need time to process such intense experiences.

Emergency Gear for Divers

• Whistle for surface signaling - compact and reliable
• Inflatable safety tube for visibility - helps rescue teams spot you
• Marine-specific first aid kit - waterproof and salt-resistant supplies
• Emergency oxygen kit (if trained) - essential for decompression incidents
• Automated External Defibrillator (AED) - for cardiac emergencies
• Emergency oxygen with delivery masks - essential for diving incidents
• VHF radio or satellite communication devices - for contacting emergency services
• Comprehensive first aid supplies and trauma kit

Pro Tip: Know where this gear is stored and how to access it quickly during an emergency.

Conclusion

Emergency First Response training literally transforms you from someone who might panic during emergencies into someone who takes prompt action. And we've seen this transformation happen countless times at Utila Dive Centre. Honestly, it never gets old.

So, it doesn’t matter if you're just starting your diving journey or pursuing professional certifications, Emergency First Response training is essential for all. It isn't just another course, it's an investment in everyone's safety. 

Ready to become the diver others can rely on when things go wrong? 

Get in touch with our experts today!

References:

[1] – Blog.PADI.com - How your Emergency First Response training can save a life

[2] – OriginalDiving.com - Handling a diving emergency

[3] – SilentWorld.com - Rescue diver equipment list: essential gear for preparedness

[4] – Scuba2000.com - Essential safety gear for scuba divers