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PADI Elite MSDT • Shark Instructor 🦈
Marine Biologist | 3000+ Certified 🤿
10000 dives 🤿💪
Global Trips 🌍
Empowering Women & Youth 💙 🇦🇪
For enquiries: 📞📱0521734065

📍 United Arab Emirates

02/09/2026

DCS + PFO 🤿

A diver can follow the computer, make a controlled ascent, do a safety stop… and STILL develop decompression sickness.

So where does a PFO fit in?

During a dive, pressure causes more inert gas to dissolve in the body. As we ascend, that gas must be eliminated. Venous gas bubbles can form during/after decompression often without symptoms.

Normally, venous blood returns to the RIGHT side of the heart, then passes through the lungs, which help filter venous bubbles.

Now add a PFO: Patent Foramen Ovale.

Before birth, we all have an opening between the atria. It normally closes after birth, but in roughly 1 in 4 adults it remains open to some degree.

Most never know.

If right-sided pressure temporarily exceeds the left, a PFO can allow a RIGHT → LEFT shunt.

For a diver with venous bubbles, this matters.

Bubbles may cross the PFO, bypass the lungs and enter arterial circulation, potentially reaching vulnerable tissues.

This is associated particularly with cerebral, spinal, inner ear and skin DCS.

But understand this:

PFO ≠ DCS.

Having a PFO does NOT mean you will get DCS. Finding one after DCS does NOT prove it caused the event. DCS also occurs without PFO, and the absolute risk remains low.

Shunt size and behavior matter too. Larger or spontaneous right to left shunts generally raise more concern.

And your dive computer?

It cannot see your PFO.
It cannot measure bubbles in your blood.
It does not know your individual physiology.

It calculates decompression from a MODEL.

Staying inside NDL reduces risk it never makes DCS risk ZERO.

Should every diver get tested? NO.

Routine PFO screening for all divers is not recommended. But after certain DCS presentations particularly cerebral, spinal, inner ear or skin DCS evaluation for a right to left shunt/PFO may be considered with a diving medicine physician.

If DCS is suspected:
STOP diving.
Give 100% oxygen if available.
Contact emergency/diving medical services.
Get evaluated even with a clean computer.

Your computer can show a normal profile while something abnormal is happening inside your body.

Understand the physiology, not just the computer. 🤿🌊

Save • Share • Foll

02/09/2026

One of those moments you can’t plan.

We were just there watching the water, and suddenly a whale shark passed right in front of us.🐋💙

Join us on our next adventure in September 🌊🤿

Nader Otaibi

01/09/2026

If you still think good buoyancy is just add air, dump air… you’re missing half the system.

Your lungs, BCD, exposure suit, tank, trim, weighting and depth are all changing your buoyancy at the same time.

That’s why some divers keep adding and dumping air all dive and still never feel stable.

Here are 10 habits that actually fix it 👇

1️⃣ Check your weighting properly
Do it near the end of the dive with a low cylinder. Too much lead means more BCD gas, more drag and bigger buoyancy changes.

2️⃣ Breathe normally
Your lungs are for fine control, not for replacing your BCD. Slow, relaxed breathing helps reduce unnecessary up/down movement. Never hold your breath.

3️⃣ Use a full exhale correctly
A deeper exhale temporarily reduces lung volume and buoyancy. Useful for fine adjustments, but don’t turn it into forced breathing or skip breathing.

4️⃣ Respect Boyle’s Law
Gas expands as pressure decreases. The biggest proportional changes happen shallow, which is why the last 10 m of an ascent need the most attention.

5️⃣ Vent from the highest point
Air moves inside your BCD. Your body position changes where it collects, so use the dump valve that is actually highest.

6️⃣ Understand your exposure suit
Neoprene compresses with depth and loses buoyancy. On ascent it expands again. Your buoyancy changes even before you touch the BCD.

7️⃣ Remember your tank changes too
As you breathe gas down, the cylinder becomes lighter. That’s one reason end of dive weighting matters.

8️⃣ Fix your trim
Bad weight distribution creates torque. Then you compensate with fins and hands instead of actually hovering.

9️⃣ Anticipate instead of reacting late
On ascent, vent small amounts before expanding gas accelerates you upward. Good buoyancy is proactive.

🔟 Stop moving and test yourself
No kicking. No sculling. No hand movement.
If you immediately sink, rise or roll, your movement was hiding the problem.

Good buoyancy isn’t about looking still.
It’s about understanding what is moving you underwater before you react to it.

Fix one habit at a time and your diving changes completely.

🤿 Save this before your next dive.
📲

28/08/2026

Just another day in Musandam, Oman… 💙

We were lucky enough to encounter false killer whales, one of those experiences you can’t schedule, promise or put on an itinerary. You just have to be in the right place when the ocean decides to surprise you.

Despite the name, false killer whales (Pseudorca crassidens) aren’t actually killer whales. They’re one of the larger members of the dolphin family and can grow to around 6 metres long.

They’re intelligent, powerful and highly social animals. They travel and hunt together, form strong social bonds, and mainly feed on fish and squid.

And that’s one of the things I love about diving in Musandam. We can organize the diving, boats, sites and everything around the adventure but the wild encounters are never guaranteed.

Sometimes you come for the diving and go home talking about the false killer whales. 😂

A big thank you to everyone who joined us and made this trip what it was. Watching everyone’s reactions and hearing the feedback afterwards is part of what makes these adventures special.

And if you’ve been watching our trips thinking you should come one day…

Join us. 🤿🌊

Come for the diving, the people and the adventure.
Whatever the ocean decides to add is the bonus.

Nader Otaibi

Some of the best moments happen between the dives. 💙Good friends, beautiful people, a boat somewhere out on the blue, an...
26/08/2026

Some of the best moments happen between the dives. 💙

Good friends, beautiful people, a boat somewhere out on the blue, and absolutely nowhere else we need to be.

Diving brings us together, but it’s these little moments the laughs, the conversations, the friendships and the memories we make along the way that stay with you.

Grateful for everyone who’s shared the ocean with us lately. 🌊🤿

Here’s to many more days like this. 💙

Nader Otaibi

26/08/2026

Did you know? 🦈

Every whale shark has its own unique pattern of spots almost like a fingerprint. Researchers can actually use those patterns to identify individual whale sharks and follow their journeys across different sightings.

But this is the part I love, scientists adapted a pattern matching algorithm originally developed for mapping stars to help match whale shark spots. 🌌🐋

Basically, technology designed to look at patterns in the sky ended up helping us understand these beautiful giants in the ocean.

Pretty amazing when you think about it, from the stars to the sea. 💙

And being lucky enough to meet one in Muscat made it even more special.

Come join us on the next adventure 🤿🌊



Nader Otaibi

25/08/2026

Looks like I’m just chilling.

Around 5m, no wetsuit, no lead weights, BCD floating beside me, still breathing from the regulator and barely doing anything.

But there’s actually a lot of buoyancy physics happening here.

Your body already has natural buoyancy.
Bone, muscle, body fat and lung volume all influence whether you naturally tend to float or sink. Add your exposure suit, cylinder and equipment, and every diver ends up with a different weighting requirement.

So zero lead isn’t the goal.
The goal is carrying only the weight your actual setup requires.

Then comes breathing.

Your lungs change volume with every breath. A slightly fuller breath increases the volume of your chest and the amount of water displaced, giving you a small increase in buoyancy. A relaxed exhale does the opposite.

That’s fine buoyancy control not holding your breath, not taking giant breaths, just continuously breathing and learning how your normal breathing cycle affects your position.

Then there’s trim and movement.

Your body position changes how you balance in the water. And sometimes the biggest improvement comes from simply doing less, less unnecessary kicking, less hand movement, less constantly trying to correct yourself.

And here’s the interesting part: 👌

5m isn’t necessarily the easy zone.

Pressure changes are proportionally greatest close to the surface, so gas spaces in your equipment and exposure protection can change volume more noticeably with relatively small depth changes. That’s why shallow water buoyancy can demand very precise control.

Eventually, good buoyancy starts looking pretty boring: 👇

Breathe.
Balance.
Relax.

And just vibe. 🤿

Whether it’s 30m or 5m, the depth changes, the awareness shouldn’t.

Don’t copy or demonstrate this setup. This is just me having fun within my own training and experience and showing what relaxed underwater control can look like.

Save it & share it 📲
Follow for more diving science education 🤿
Nader Otaibi

Join us for an epic AC Overnight Liveaboard adventure in Oman Musandam 🌊🔥 clear water, mountain views, marine life, suns...
24/08/2026

Join us for an epic AC Overnight Liveaboard adventure in Oman Musandam 🌊🔥

clear water, mountain views, marine life, sunsets, BBQ nights, and nonstop ocean vibes… this is the kind of trip you remember for years.

📅 Trip Dates: September , 18-20

Musandam, Oman one of the most beautiful dive destinations in the region, and we’re heading back again!

What’s Included:
✅ AC sharing cabin onboard
✅ 6 boat dives exploring reefs, walls & marine life
✅ Snorkeling option for non divers, everyone is welcome
✅ Full diving & snorkeling equipment included
✅ Fresh meals, snacks & drinks onboard
✅ Kayak & banana boat fun
✅ BBQ dinner
✅ Good music, good people & unforgettable memories

Perfect for:
🌟 Certified divers
🌟 New divers building confidence & experience
🌟 Snorkelers and ocean lovers
🌟 Anyone needing a proper sea escape

🤿 Limited to only 8 spots left’s.

📩 DM now to reserve your spot before we’re fully booked.
Let’s disconnect from the city and reconnect with the ocean 🌊

21/08/2026

Habibi… not this way. 🤿🦈

Bull sharks, tiger sharks, and one tiger getting a little too comfortable.

Just another day with the sharks.💙

Maldives — December & March. Join us. 🇲🇻



Nader Otaibi

20/08/2026

MASK SKILLS, CAN YOU STAY IN CONTROL WITHOUT ONE?

Clearing a mask is one of the first skills divers learn. But as your diving progresses, the challenge isn’t simply getting water out.

It’s staying calm, breathing, maintaining buoyancy and solving the problem without losing control.

Here’s what every diver should understand 👇

1. A Flooded Mask Doesn’t Stop Your Air
Your regulator is still delivering breathing gas. Water around your eyes and nose can feel uncomfortable, but your first job remains simple, breathe continuously and stay calm.

2. Control the Reaction
Many new divers instinctively rush when water enters the mask. Training repeatedly teaches your brain that a flooded or missing mask is a problem you can manage not a reason to bolt for the surface.

3. Clear It Efficiently
Apply light pressure to the upper frame, look slightly upward and exhale steadily through your nose. Air enters the mask and displaces water through the lower skirt.

4. Now Remove It Completely
No mask. Keep breathing through your regulator and continue functioning underwater. The goal isn’t speed it’s control.

5. Swim Without the Mask
Maintain direction, awareness and controlled breathing. Losing clear vision shouldn’t mean losing your ability to think and act.

6. Buoyancy Changes Everything
Can you replace and clear your mask while neutrally buoyant without standing, shooting upward or sinking?

That’s where a basic skill becomes real diving control.

7. Replace → Seal → Clear
Position the mask correctly, make sure nothing is trapped under the skirt, then clear it calmly while maintaining depth.

8. Remember the Physics
Your mask contains an air space. As you descend, ambient pressure increases and the gas inside compresses. Equalize the mask by gently exhaling through your nose when needed.

9. Don’t Overtighten the Strap
Tighter doesn’t automatically mean better. Correct fit and a clean seal matter more.

10. The Real Skill
Mask off. Keep breathing. Keep your buoyancy. Stay aware. Fix the problem. Continue the dive.

A good diver isn’t someone who never has a problem.

It’s someone who stays in control while solving one. 🤿🌊

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