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Guardian environment reporter Oliver Milman joins a group of scientists on an underwater expedition off the Bermuda coast to help chart its hidden depths and gauge the general health of the area’s reef and coral. Travelling in a two-man submersible, Milman and submarine pilot Kelvin Magee go on a journey 500ft below the surface. Subscribe to The Guardian ► http://is.gd/subscribeguardian 6x9 experience solitary confinement ► http://bit.ly/6x9gdn The Guardian ► http://is.gd/guardianhome Suggested videos: ► ► Guardian playlists: Comment is Free ► http://is.gd/cifplaylist Guardian Docs ► http://is.gd/guardiandocs Guardian Features ► https://goo.gl/JThOzd Guardian Animations & Explanations ►http://is.gd/explainers Guardian Investigations ► http://is.gd/guardianinvestigations The Global Migration Crisis ► http://is.gd/RefugeeCrisis Anywhere but Westminster ► https://goo.gl/rgH1ri More Guardian videos: 6x9: experience solitary confinement – 360 video ► http://bit.ly/6x9gdn We Walk Together ► http://bit.ly/WeWalkTogetherFilm The last job on Earth ► http://bit.ly/LastJobOnEarth Patrick Stewart: the ECHR and us ► http://bit.ly/PatrickStewartS The Panama Papers ► http://bit.ly/HowToHide1Billion The Syrian Spaceman who became a refugee ► http://bit.ly/SyrianSpace The epic journey of a refugee cat ► http://bit.ly/KunkuzCat If I Die On Mars ► http://is.gd/IfIDieOnMars We can't ban everything that offends you ► http://bit.ly/CensorshipCiF Revenge Porn: Chrissy Chambers and her search for justice ► http://ow.ly/TUoOs Mos Def force fed in Gitmo procedure ► http://is.gd/mosdef Edward Snowden interview ► http://is.gd/snowdeninterview2014 Bangladeshi Sex Workers take steroids ► http://is.gd/sexworkers Other Guardian channels on YouTube: Guardian Football ► http://is.gd/guardianfootball Guardian Music ► http://is.gd/guardianYTmusic Guardian Australia ► http://is.gd/guardianaustralia Guardian Tech ► http://is.gd/guardiantech Guardian Culture ► http://is.gd/guardianculture Guardian Wires ► http://is.gd/guardianwires Guardian Food ► http://is.gd/guardianfood
British Columbia is home to some of the most unique diving in the world. Shipwrecks, artificial reefs, ancient sponge bioherms, diverse marine life, canyons, walls, reefs, sea lions... there's more to explore in British Columbia, Canada, than you may realize. #scubadivebc For more info visit: http://scubadivebc.com Dive Industry Association of BC Produced by: http://seaproof.tv Additional stock footage: Neil McDaniel, Bill Coltart, Subvision Productions
https://www.simplyscuba.com/ Join Mark as he talks about the top 5 best places to dive in the USA. 5. Monterey Bay, California https://www.youtube.com/watch?v=CFAhexPpNrc 4. Kailua Kona, Hawaii https://www.youtube.com/watch?v=bxgPYIdWnzk 3. Pensacola, Florida https://www.youtube.com/watch?v=EKVBtMjHu9s 2. Flower Gardens, Gulf of Mexico https://www.youtube.com/watch?v=3IOzDAMjn1Q 1. Florida Keys, Florida https://www.youtube.com/watch?v=j76-wxsRkco https://www.youtube.com/watch?v=wI1Ue8XOgPw To browse our huge range of top brand Scuba gear and equipment for all ages, with fast shipping and 28 day returns, visit http://www.simplyscuba.com For more helpful product videos plus expert swimming advice, head to http://www.youtube.com/user/SimplyScuba
Learning about atmospheres underwater is easy! This short motion graphic explains the basics of pressure, density and volume underwater while diving. Learn more about diving at: chrisbrockscuba.com Audio Script: Think about it. Your lungs are balloons. When you breathe in, your lungs inflate, and when you breath out, your lungs deflate. So what would happen if you held your breath while scuba diving? If you held your breath while descending, your lungs will become smaller – creating dense pressure inside your full lungs. If you held your breath as you ascended, the air in your lungs would increase in size under pressure. In either scenario, eventually your lungs would fail. This is why the number 1 rule of scuba diving is NEVER HOLD YOUR BREATH! So, you might be thinking – why does pressure change underwater? It’s simple. The deeper you dive, the higher atmosphere you’re in. When diving into a higher atmosphere, the volume of air spaces will get smaller, and the molecules in those spaces will become more compact. The term atmosphere is simply a unit to measure ambient pressure. Since water is denser than air, greater changes in ambient pressure occur underwater. Every 33 feet of depth adds another atmosphere to the ambient pressure. Once you understand atmospheres you can calculate your own air consumption at a given pressure, helping you plan your dives efficiently and accurately. As a recreational scuba diver, you are trained to dive safely between 1 and 5 atmospheres. At sea level you start your dive at 1 and as you descend deeper underwater, the pressure and density increases – and the volume decreases. This relationship between pressure, density and volume stays consistent as you dive. At 33 feet deep you’re at 2 atmospheres. At this depth, volume is 1/2 of what it was on the surface and the density is 2 times denser. This relationship continues as you dive deeper – all the way down to 132 feet where at 5 atmospheres the volume is 1/5 of what it was on the surface and the density is 5 times denser. Make sense? Think about it this way. If you had a balloon at the surface with a volume of 10 units, taking it down to 5 atmospheres, would reduce the balloon’s volume to 2 units – because at 132 feet, the volume of an object is 1/5 of what it was on the surface.
Koh Chang, one of the largest Thai islands in the Gulf of Thailand. Mu Koh Chang National Park, a preserve with hiking trails and waterfalls, covers the interior and extends to offshore coral reefs. #gopro #GoProHERO4Silver #FreedomDIVE #KohChang #ScubaDiving #Underwater #RabbitDiving #GoProThailand #HTMSChang #FullHD
Searching for a Ford Pinto at the bottom of Grand Traverse Bay off the shore of Old Mission Peninsula in northern Michigan.