If you were taught like us, then you were taught to keep your octo in a triangle from your chin to the bottom of your rib cage. But that opens things up, because not all divers keep their octo on their right hip. We always dive with two 2nd stages for redundancy, if something fails on your buddy’s set, then you can both breathe at the same time from your cylinder.

What will be the next big thing in scuba diving? Why are sea snakes confusing divers for their mates? Did two scuba divers die from the bends? And did you know that researchers are using liquid metal to turn motion into electricity? We talk about these and much more in this episode of Deco Stop.

Coral reefs are one of the main reasons we go diving. Bright and colourful, at least for the time being, coral reefs are similar to jungle ecosystems. They’re full of life and complex, so there are some things that you need to remember.

So which is better: DIN or A-Clamp? Why do we need scuba masks when freediving masks do the job? Should I book a trip through my dive school? Are the Kubi Icelandic gloves any good? We answer these questions... And some others in this episode of #askmark

You use STELLA when you’re about to ascend to make sure that you’re covering everything and you don’t ascend before forgetting something. So, thumb your buddy, complete your stops, send up your dSMB and then STELLA, not the drink...

Will scuba stores follow the trend of other businesses and close their doors due to online demand? Could this move actually help dive schools, as they will be the only places to try on scuba gear? Baby shark born in an aquarium where there are no male sharks, an orca dies at SeaWorld San Diego... We discuss all of this and plenty more in this episode of Deco Stop.

Wreck diving is a staple for a lot of scuba divers, it’s a way to literally dive into the past and explore places that few people can or ever have seen. Inside shipwrecks is a fascinating place to be, where industrial architecture is combined with natural structures growing on it. And, there’s often interesting shiny stuff to look at. But no touch, only look But, shipwrecks can be deceiving.

So let’s talk about boltsnaps, the Cressi MC9, the RK3 (again), the XDeep Zen backplate and plenty of other questions in this episode of #askmark

In this episode of the Dive Brief Mark talks about the best scuba diving fins to hit the market this year.

SORTED is a quick acronym to go through in your head, or out loud if you want, that can help you improve your diving. It comes from an older age of diving, a more analogue age, but if you ever encounter equipment failure or something, it might help that you’ve started the dive right…