Editorial desk

Outspoken Digest Diving Desk

Covers freediving, recreational and technical diving, dive medicine and the incidents the sport learns from.

Stories by Outspoken Digest Diving Desk

Diving

Nitrox Buys You Bottom Time and Costs You Depth, and It Will Not Make You Less Tired

Enriched air extends no-decompression limits at recreational depths by reducing the nitrogen you take on. It also imposes a hard ceiling on how deep you can take it, and the claim about post-dive fatigue has never held up.

Sep 5, 2026/3 min read

Nitrox and trimix blending equipment plumbed into a high pressure compressor intake, with the oxygen analyser inline

Diving

Almost Every Skill Problem in Diving Is a Weighting Problem Wearing a Disguise

Divers who silt the bottom, burn through gas, struggle to hold a safety stop and finish cold usually share one cause. They are carrying too much lead, and every other symptom follows from it.

Sep 5, 2026/3 min read

A diver holding position alongside a rock face covered in yellow soft corals, close to the structure without touching it

Diving

The Ear Problem Nobody Teaches You Is the One That Happens on the Way Up

Descent equalisation is drilled into every open water student. Reverse block, where expanding gas cannot escape the middle ear or sinus on ascent, gets a sentence in the manual and is considerably harder to manage.

Sep 5, 2026/3 min read

A diver hanging mid-water on ascent in clear blue, with a seal passing in front of them

Diving

In a Current You Are Not Swimming Anywhere, and the Skill Is Knowing That Early

Drift diving turns a dive from a route into a ride. The techniques that make it safe are mostly about the surface and the boat, and the mistake that kills people is trying to fin against water that is stronger than they are.

Sep 5, 2026/3 min read

A diver moving beneath an enormous school of silver baitfish in open blue water

Diving

Solo Diving Is Either Reckless or Honest, Depending on What You Think a Buddy Actually Does

Two agencies now certify divers to dive alone, with redundant gas and a long list of prerequisites. The case for it rests on an uncomfortable observation about how often the buddy system already fails in practice.

Sep 5, 2026/3 min read

A single scuba diver in silhouette against bright water above, with nobody else in the frame

Diving

The SMB Is the Only Piece of Kit That Talks to the Boat, and Almost Nobody Practises With It

A delayed surface marker buoy is what turns a diver in open water from invisible into findable. It is also the item most divers buy, clip on, and deploy for the first time in the situation where they actually need it.

Sep 5, 2026/3 min read

A scuba diver preparing to deploy a delayed surface marker buoy at depth, beside the boiler of a wreck

Diving

Aluminium or Steel Decides How Much Lead You Carry, and Almost Nobody Is Told Why

The standard aluminium 80 is negatively buoyant full and positively buoyant empty, which is why safety stops go wrong at the end of a dive. Steel behaves differently, and the valve and testing rules differ too.

Sep 5, 2026/3 min read

A scuba cylinder valve in close up, showing the threaded outlet, the handwheel and the pressure rating stamped into the body

Diving

Lumens Are the Number on the Box and the Least Useful Thing About a Dive Light

Manufacturers compete on brightness because it is a single large number. Underwater, beam angle, burn time at full output and the switch you can operate in gloves decide whether a torch is any good.

Sep 5, 2026/3 min read

A diver holding a torch in green low visibility water on a wreck, the beam scattering off particles in front of them

Diving

The Sting Will Not Kill You, and the Wrong First Aid Might Still Ruin the Trip

Lionfish, stonefish, stingrays and most jellyfish deliver venoms that heat breaks down. The standard measure is immersion in fresh water as hot as you can stand without burning, capped at 45 degrees, for thirty to ninety minutes.

Sep 2, 2026/4 min read

A common lionfish, Pterois miles, hanging over coral at Shaab El Erg reef in the Egyptian Red Sea, venomous spines fanned out

Diving

Most Divers Who Cannot See Solve It the One Way an Eye Doctor Would Not

Glasses do not fit under a mask, so the default answer is contact lenses. Eighty-five per cent of cases of a rare blinding corneal infection occurred in lens wearers who swam or dived in them, and there is a better option most divers never price.

Aug 20, 2026/5 min read

A diver underwater looking through a half mask

Diving

How a Scuba Regulator Is Actually Tested, and Why Most Reviews Are Not Tests

A breathing machine pressurised to 198 feet of seawater measures the work it takes to pull air through a regulator. Almost nothing you read online involves one, and the difference is the whole review.

Aug 18, 2026/4 min read

The internals of a scuba demand valve, showing the valve lever and flow deflector

Diving

The 2026 Dive Computer Question Is Not Which Screen. It Is Whose Algorithm You Trust

Shearwater, Garmin and Suunto now sell wrist computers that look broadly alike and cost between 760 and 1,800 dollars. What separates them is the decompression model, the transmitter, and what you are really paying for.

Aug 18, 2026/4 min read

The Shearwater Peregrine TX dive computer

Diving

One Company Now Owns Aqualung, Apeks, Mares, rEvo and a Training Agency

HEAD rescued Aqualung out of receivership with a 50 million euro package. The result is a single group holding four of diving's best known equipment names and SSI, the agency that certifies divers to use them.

Aug 18, 2026/4 min read

Diving

Three Divers Drifted Off Puerto Galera and Lived. Most of Surviving That Happens Before You Get In

Two men and a woman surfaced from a dive at Canyon Reef, found no boat, and were carried kilometres out. Whether lost divers are found has surprisingly little to do with the search itself.

Aug 18, 2026/4 min read

A scuba diver at the surface in open water

Diving

Flying After Diving: Where 12 and 18 Hours Actually Came From

The numbers every diver recites are not arbitrary and they are not a safety margin invented by lawyers. They come from a specific set of chamber trials, and knowing their limits tells you when to wait longer.

Aug 15, 2026/5 min read

An aircraft wing above cloud, seen from a passenger window

Diving

PADI, SSI, NAUI, IANTD or GUE: Which Certification Actually Matters

The agencies argue endlessly and the accident data barely distinguishes between them. Here is what genuinely differs, what does not, and the questions to ask a dive centre before you pay.

Aug 13, 2026/4 min read

A group of divers gathered around an instructor for a pre-dive briefing on a boat deck

Diving

Freediving in the UAE: Where to Train When the Sea Is 34C

The east coast has the depth, the Gulf side has the pools, and summer changes the answer entirely. A practical guide to training here across the year rather than flying to Dahab every time.

Aug 13, 2026/3 min read

A dive boat anchored in a sheltered fjord bay below rocky mountains

Diving

The Summer's Diving Deaths Have More in Common Than the Coverage Suggests

A cave in the Maldives, a lake in Germany, an inlet in Florida, a tuna farm off Malta. Four very different events, and a short list of factors that shows up in nearly all of them.

Aug 13, 2026/4 min read

Scuba cylinders and kit lined up on a dive boat deck at sunrise

Diving

Lung Squeeze: The Freediving Injury That Comes From Trying Too Hard

Coughing pink after a deep dive is not something to shrug off. Squeeze happens when tissue cannot keep up with pressure, and the usual causes are tension, forcing equalisation and pushing depth too fast.

Aug 13, 2026/3 min read

A freediver descending into dark deep water where the light fades

Diving

GUE: The Agency That Will Fail You, and Thinks That Is the Point

Global Underwater Explorers standardises equipment, teaches in teams, tests fitness, and hands out provisional passes rather than certificates. It is the most divisive system in diving, and the most internally consistent.

Aug 12, 2026/4 min read

A team of divers holding horizontal trim together in mid-water, lights pointed forward