SSI Instructor Trainer Mark Slingo
SSI Instructor Trainer · Ocean Tribe Founder

Meet Mark Slingo

Instructor Trainer, inclusive-diving advocate and lifelong underwater explorer helping divers and dive professionals reach their full potential.

2001 First Certification Learned to dive on Australia’s Great Barrier Reef.
2008 PADI Course Director At the time, the youngest Course Director in the world.
2015 Founded Ocean Tribe Opened a professional dive centre in Diani, Kenya.
5000 Platinum Pro Award Recognised for an exceptional lifetime of diving.
2025 SSI Elite Instructor Trainer Continuing to train the next generation of dive professionals.
Where it all began

From childhood obsession to a life underwater

From watching James Bond movies and classic episodes of Flipper to reading Willard Price’s Underwater Adventure and Diving Adventure, Mark was fascinated by the underwater world from an early age.

Originally from Great Britain, he spent years snorkelling and freediving on family holidays before earning his Open Water Diver certification on Australia’s Great Barrier Reef during a gap-year journey around the world.

After completing his bachelor’s degree at Newcastle University, Mark travelled to Thailand to become a Divemaster. Life on the dive boats suited him so well that he stayed to become a diving instructor.

Instructor Trainer Mark Slingo
Mark Slingo during his early diving journey
From Open Water Diver to Instructor Trainer and dive-centre founder.

Scuba diving is not a wheelchair sport. If you are a diver, you are a diver.

Mark Slingo
A remarkable diving journey

From instructor to industry leader

Mark’s career spans recreational training, instructor development, adaptive diving and the creation of Ocean Tribe in Diani.

2001

The first certification

Earned his Open Water Diver certification on Australia’s Great Barrier Reef.

2004

Became a diving instructor

Progressed from Divemaster to professional instructor while working in Thailand.

2005

IAHD Instructor Trainer

Developed his professional role working with divers with disabilities.

2008

PADI Course Director

Became the youngest PADI Course Director in the world at the time, aged 25, and the first wheelchair user to attain the rating.

2013

Breaking new ground in Australia

Taught the first Disabled Divers International Instructor course held in Australia.

2015

Ocean Tribe was born

Opened Ocean Tribe in Kenya and was appointed Director of Diver Training for Disabled Divers International.

2015

International instructor-trainer development

Trained the first DDI Instructor Trainers in Australia, New Zealand, the United States and Canada.

2016

SSI Gold 500 Instructor

Received recognition for reaching a significant professional teaching milestone.

2017

Platinum-level recognition

Awarded SSI Platinum 1000 Instructor and the prestigious Platinum Pro 5000 Diver award.

2018

Adaptive Techniques across Asia

Taught early PADI Adaptive Techniques Specialty Instructor courses in the Philippines, South Korea, Indonesia and China.

2019

Recognition in Roatán

Received an award from the Governor of Roatán for services to the people of Roatán.

2020–23

Course Director recognition

Recognised as a PADI Silver Course Director in 2020/21 and a Gold Course Director in 2022 and 2023.

2025

SSI Elite Instructor Trainer

Earned SSI Elite Instructor Trainer recognition and qualified as an SSI Basic Freediving Instructor.

Mark Slingo working in inclusive and adaptive diving
Diving without barriers

A leader in inclusive diving

A fall from a third floor left Mark paralysed from the waist down. Following four months in a UK spinal unit, the thought of returning to scuba diving helped drive his recovery.

Just three weeks after leaving the spinal unit, Mark was invited back to teach in Thailand. Discovering that he could continue teaching as a diving instructor inspired him to help make the underwater world accessible to more people.

Mark later became Director of Training and Marketing for Disabled Divers International and travelled internationally teaching Divemasters, Instructors and Instructor Trainers how to work with divers with disabilities.

1 Wheelchair-using Course Director The first wheelchair user to achieve the PADI Course Director rating.
2 SSI Classified Diving Works closely with SSI through its inclusive Classified Diver programs.
3 International Trainer Has trained adaptive-diving professionals in multiple countries.
4 Platinum Pro 5000 Recipient of one of recreational diving’s distinguished awards.
Professional credentials

Qualifications and trainer specialties

Mark’s experience covers recreational training, professional development, adaptive diving, technical foundations, ecology and specialist instructor education.

Core Diving Qualifications

Professional, instructor-trainer and recognition credentials.

  • SSI Instructor Trainer
  • PADI Course Director — Retired
  • DDI Instructor Examiner
  • EFR Instructor Trainer
  • DAN Instructor
  • IAHD Instructor Trainer
  • SSI Platinum 1000 Instructor
  • Platinum Pro 5000 Diver
  • PADI Freediver
  • TDI Advanced Nitrox Diver
  • SSI Basic Freediving Instructor
  • SSI Survival Swimming Instructor
SSI Specialty Instructor Trainer 28 specialties
Advanced Wreck Boat Diving Computer Diving Coral Identification Deep Diving Dive Guide Diver Stress & Rescue Enriched Air Nitrox Equipment Techniques Fish Identification Full Face Mask Diver Independent Diving Marine Ecology Marine Invertebrate Ecology Marine Mammal Ecology Manta & Ray Ecology Navigation Diving Night & Limited Visibility Perfect Buoyancy React Right Recreational Sidemount Science of Diving Scooter / DPV Diving Search & Recovery Sea Turtle Ecology Shark Ecology Waves, Tides & Currents Wreck Diving
PADI Specialty Instructor Trainer 20 specialties
Adaptive Techniques Deep Diver Digital Underwater Photography DPV Diver Enriched Air Nitrox Emergency Oxygen Provider Fish Identification Full Face Mask Diver Multilevel Diver Night Diver Peak Performance Buoyancy Project AWARE Search & Recovery Self-Reliant Diver Sidemount Diver Underwater Navigator Wreck Diver Dive Against Debris Coral Reef Conservation Shark Conservation Diver
Beyond the dive centre

Mark away from diving

Away from training, Mark is a major sports fan who follows the England rugby and cricket teams as well as his beloved Ipswich Town Football Club.

He is also a passionate traveller and photographer whenever time allows. He fancies himself as a chef too, so an Ocean Tribe barbecue may provide another opportunity to experience his enthusiasm.

Kenya offers Mark the diving, wildlife, photography, travel and outdoor lifestyle he loves—which is a major reason he chose to make Diani home.

⚽ Ipswich Town 🏉 England Rugby 📷 Photography 🌍 Travel 🔥 Ocean Tribe BBQs ⚓ Wreck Diving
Mark Slingo enjoying a dive with a DPV

Wreck diving is a particular love of mine, but any time I’m in the water diving with a cool buddy is the best experience ever!

Mark Slingo
Your professional journey starts here

Ready to train with Mark?

Join Ocean Tribe in Diani for professional-level diver training, instructor development or inclusive-diving education with one of the industry’s most experienced trainers.