Marcus Knight

Marcus Knight

Marcus Knight (aka “The Scuba Monkey”) first dived during the ‘90s and was bitten by the scuba bug. During the years that followed, Marcus became absorbed in diving and, today, is a Master Instructor for both PADI and SSI.

With over a decade as a professional diver, Marcus has lived and taught
scuba around the world, including Australia, Asia, the Mediterranean Sea and the wreck heaven of Scapa Flow in the Orkney Islands. Check out his website here.

Stories by Marcus
Scuba Refresher Course

Why You Should Take a Scuba Refresher Course

If you haven’t been diving for a while or you’ve got a big trip planned, it’s wise to take a scuba refresher course before you blow bubbles again.

Health In the Water New to Scuba Training

Training Fundamentals: The Dunning-Kruger Diver

What is the Dunning-Kruger effect, and what role does this condition play in dive incidents and accidents?

In the Water

Training Tips: How to Safely Conduct a CESA

What is a Controlled Emergency Swimming Ascent (CESA) and how do you safely execute one?

Places to Learn to Scuba Dive
Dive Locations In the Water Training Travel

Best Places to Learn to Scuba Dive

Some locations are more beginner friendly than others. What are the world’s best places to learn to scuba dive?

New stuff
Macro Images

Shooting for a Black or Blue Background in Macro Images

Once you’ve mastered lighting in your underwater compositions, it’s time to learn how to shoot for a black or blue background in your macro images.
by Guest Author
Drysuit P-Valve

Introduction to the Drysuit P-Valve

There are divers who pee in their wetsuits and divers who lie about it. But what if you’re in a drysuit when the urge strikes? A drysuit p-valve can save the day.
by Richard Devanney
undersea vegetarians

The Undersea Vegetarians of Wakatobi

Plant-based diets have gained a lot of popularity in recent years, but plenty of marine animals have always eaten this way. Meet the ahead-of-the-trend vegetarians of Wakatobi Dive Resort. 
by Guest Author
Lemon Shark

Diving the Lemon Shark Aggregation of Jupiter

From December to late March, the waters off Jupiter Florida are home to a spectacular lemon shark aggregation.
by Chris Vyvyan-Robinson