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Scuba diving guides

Articles on dive skills, certification, dive planning and dive sites.

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Dive DestinationsOctober 19, 20269 min read

Best Time to Dive in Hurghada: Water Temperature and Wind by Month

Hurghada diving by month: sea and air temperature, wind, wetsuit thickness, the calmest months for exposed reefs and wrecks, and what changes in winter.

Safety & Dive MedicineOctober 12, 202610 min read

Seasickness on Dive Boats: Prevention and Medication for Divers

How divers can prevent seasickness, which medicines to test on land before a dive day, the drowsiness risk at depth and how to vomit through a regulator.

Safety & Dive MedicineOctober 12, 202611 min read

Diving After Decompression Sickness: Waiting Times and Medical Checks

Waiting times after decompression sickness from DAN, UHMS, DMAC and the US Navy, plus the medical review, PFO testing, flying after treatment and safer diving.

Scuba GearOctober 12, 202612 min read

Pony Bottle vs Spare Air: Which Redundant Air Source, and What Size?

How much gas a Spare Air and a pony bottle give at 18 m and 30 m, when agencies require redundant gas, how to set one up and which size suits each dive.

Training & CertificationOctober 12, 202612 min read

Is Divemaster Worth It? Cost, Time, Internships and Pay

What a divemaster can and cannot do, entry rules at PADI, SSI, NAUI and CMAS, listed course and yearly costs, how internships work and what the pay data shows.

Training & CertificationOctober 9, 20269 min read

Can You Scuba Dive If You Can't Swim? Swim Test Rules by Agency

A try dive asks for little swimming, but every Open Water course has a swim test. PADI, SSI, SDI, NAUI and CMAS rules compared, plus a plan for non-swimmers.

Safety & Dive MedicineOctober 9, 202612 min read

Can You Scuba Dive With Diabetes? Insulin, Glucose Checks and Rules

Diabetes, even type 1 on insulin, need not rule out scuba diving. UHMS/DAN, UKDMC and SPUMS criteria, pre-dive glucose checks and the hypo signal compared.

Safety & Dive MedicineOctober 6, 202611 min read

Can You Scuba Dive With High Blood Pressure? Limits and Medication

Controlled high blood pressure does not rule out diving. UKDMC, UHMS, SPUMS and EDTC limits compared, plus beta-blockers, diuretics and pulmonary oedema.

Dive DestinationsOctober 6, 202610 min read

Bonaire Diving: Shore Diving, Nature Fee, Dive Sites and Seasons

Bonaire shore diving explained: yellow stones and tank pickup, the USD 40 STINAPA nature fee, orientation dive rules, main dive sites, seasons and the chamber.

Dive DestinationsOctober 6, 20269 min read

Koh Tao Diving: Courses, Dive Sites, Seasons and Choosing a School

Koh Tao diving explained: how the Open Water course runs, dive site depths and levels, the rainy months, whale shark season, reef rules and the island's chamber.