Marcus Okafor
PADI Master Scuba Diver Trainer and technical dive equipment specialist with over a decade of experience testing and evaluating gear in diverse marine environments across six continents.
Marcus has logged over 3,000 dives in locations ranging from the kelp forests of the Pacific Northwest to deep wrecks in the Caribbean and coral systems throughout Southeast Asia. As a working dive instructor and equipment specialist, he spends his days introducing new divers to the underwater world while rigorously field-testing the latest regulators, BCDs, and exposure suits in real-world conditions. His approach to gear evaluation prioritizes safety, durability, and practical performance over marketing hype, drawing from thousands of hours underwater and countless equipment failures, successes, and everything in between.
38 published articles on The Scuba Gear Lab
By Marcus Okafor
Published Articles
How-To Guide
Underwater Scooter Maintenance Checklist: O-Rings, Seals & Battery Care
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How-To Guide
How to Choose a Scuba Regulator: Matching Performance Specs to Your Diving Style
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How-To Guide
How Dive Scooters Work: Motors, Battery Chemistry & Propulsion Systems Explained
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How-To Guide
DIN vs Yoke Regulator Connection: Which Valve Type Should You Choose?
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How-To Guide
Biometric Dive Technology: Complete Guide to Smart Diving Systems
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How-To Guide
Pre-Dive Regulator Safety Checklist: 12 Critical Inspection Points Before Every Dive
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Buyer's Guide
Best Cold Water Scuba Regulators: Performance Testing Down to 35°F
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How-To Guide
How to Service Your Scuba Regulator: Complete Maintenance Schedule and DIY Safety Checks
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Buyer's Guide
Best Underwater Scooters: Lab-Tested Performance Analysis
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How-To Guide
How to Use an Underwater Scooter: Propulsion, Navigation & Trim Control
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How-To Guide
Underwater Camera Maintenance Checklist: Pre-Dive and Post-Dive Care
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How-To Guide
What is Intermediate Pressure in Scuba Regulators: Understanding IP Settings and Performance
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How-To Guide
BCD Pre-Dive Safety Checklist: Complete Buoyancy Compensator Inspection Guide
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How-To Guide
How to Calibrate Biometric Dive Sensors for Accurate Readings
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Buyer's Guide
Yamaha 350Li vs TUSA SAV-7: Technical Dive Scooter Comparison
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Buyer's Guide
Diaphragm vs Piston Regulators: Performance Data, Maintenance Costs, and Depth Testing
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Buyer's Guide
Best Scuba Regulators for Beginners: Top 7 Picks for New Divers in 2026
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How-To Guide
Understanding Underwater Color Loss and White Balance Correction
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Buyer's Guide
Best Underwater Camera Housings for Scuba Diving in 2026
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How-To Guide
Dive Gear Bag Packing Checklist: Everything You Need for Your Dive Trip
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Buyer's Guide
Best Cold Water Scuba Regulators: 6 Top-Rated Models for Ice and Drysuit Diving
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How-To Guide
How to Maintain Dive Equipment During Multi-Day Liveaboards
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How-To Guide
How to Choose a Wetsuit for Scuba Diving
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How-To Guide
Best Dive Regulators: Complete Buyer's Guide with Performance Testing and Expert Recommendations
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How-To Guide
How to Choose a Dive Bag: Size, Material, and Feature Guide
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How-To Guide
How to Service a Scuba Regulator: Complete Maintenance Guide and Schedule
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How-To Guide
Understanding Liveaboard Equipment Requirements and Restrictions
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How-To Guide
The Complete Guide to Scuba Regulators: How They Work, What to Look For, and How to Choose
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How-To Guide
Pre-Dive DPV Safety Checklist: Battery, Buoyancy & Emergency Procedures
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How-To Guide
Pre-Dive Computer Checklist: Setup and Safety Verification
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How-To Guide
How to Choose a Buoyancy Compensator: Matching BCD Features to Your Dive Profile
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Buyer's Guide
Best Travel BCDs for Liveaboard Adventures
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Buyer's Guide
Best Biometric Dive Computers for Scuba Divers
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How-To Guide
How Scuba Regulators Work: First Stage, Second Stage, and Pressure Mechanics Explained
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How-To Guide
Biometric Dive Safety Checklist: Essential Sensors and Calibration
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How-To Guide
How to Master Buoyancy Control for Underwater Photography
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Buyer's Guide
Best Travel Scuba Regulators: Lightweight Models Under 3 lbs with Full Performance Specs
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How-To Guide
DIN vs Yoke Regulators: Pressure Ratings, Safety Differences, and Compatibility Guide
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