How long dive

Scientists and those who practise free diving are in many ways utterly alien to one another. When you look at the stresses this sport places on our physiology, it initially looks almost impossible that anyone should be able to dive to such profound depths — and yet they do. Unsupported, breathing only air, you could just about climb Everest without any additional support other than your protective clothing. But when you go into the ocean actually things change much more quickly because of the rapid pressure differences.

And for every 10m beyond you get another atmosphere of pressure. That starts to manipulate your body, your anatomy and your physiology in quite profound ways, which actually make the endeavour of diving into the deep ocean uniquely difficult. Not only does it compress you and shrink the air-containing spaces in your body, but also it alters your physiology, alters the way the gases act within your blood stream and how they act on everything, including your nervous system.

But of course, free divers decided to do it anyway — and they swam well past those theoretical limits. Martina Amati, the free diver and artist involved in the project, tried to explain the mind set that goes with this extreme sport:. Want to make that dive tank last longer? Here are some air scuba diving tips to help you save air and reduce consumption. Increase your bottom time now. Click below to grab our free report and weekly actionable tips:.

Our Ebooks For Beginner Divers:. Our Complete Ebook. Buoyancy Control Ebook. Air Consumption Ebook. Boat Diving Ebook. Ear Equalization Ebook. Copyright All rights reserved. Rating How long you can stay under. Zept Contributor. Longer than a piece of string, I guess. But seriously, how long is your typical dive? I know bottom times depend on all sorts of things I'm just curious to see what people consider 'typical' normal, average, ideal Messages 1, Reaction score 0.

Typical used to be minutes. Lately they've all been in the minute range. Arduous Contributor. Messages Reaction score 1 Location Massachusetts. My dives are usually in the 50 minute range. Sometimes a little more sometimes a little less. FLL Diver Contributor. There's a loaded question. It's like when non-divers who ask how long we can stay underwater for and I have to answer - it depends. Looking at my logbook they range from 22 minutes to 54 minutes.

But since I got my computer, it's been getting longer. Beats diving off tables. JamesK Contributor. That is really hard to say. Sometimes I do a 20 minute "play time" dive in the quarry working on a specific skill, or just hanging out. Other times I do 1 to 1.

This is the reason that the question is so difficult to answer. Predicting how long a tank will last underwater requires an understanding of the physics of water pressure, tank volumes, and air consumption rates.

However, I have one answer that applies to every diver who asks how long his tank will last underwater: Never long enough! Tank Volume One of the most common tanks in recreational diving is the aluminum cubic-foot tank, which holds 80 cubic feet of air compressed to pounds per a square inch.