It is important not to dive with an excessively tight neck seal, as a very tight neck seal will restrict blood flow to your brain, which in a worst case scenario can lead to brain damage and be dangerous. A very tight neck seal will also be uncomfortable and will be difficult to get over your head.
You can set most drysuit exhaust valves to vent air automatically while underwater, but to do so the air in your drysuit needs to migrate to where the exhaust valve is located on the suit. You can adjust the valve and how much air is released, but it’s best to have the valve set to fully open.
You could wear a wetsuit under a drysuit, but it’s not the best way to keep you warm. So you should wear an under-suit that’s designed for wearing under a drysuit, which is designed to keep you warm instead.
The scuba diving basics include mastering your buoyancy control and mastering your air consumption to extend your dive time and have fun diving.
This Bahamas Cat Ppalu Liveaboard ireview reveals a 20 metre (66 feet) catamaran sailing dive boat for up to 12 scuba divers. Meals cater for all dietary requirements. 6 aircon cabins for couples, singles and families sharing 2 bathrooms. Ideal for groups and charters.
This Bahamas Master Liveaboard review reveals a 35 metre (115 feet) catamaran dive boat custom built for up to 16 scuba divers. With paid Nitrox onboard so you can extend your dive times. Meals cater for all dietary requirements. 11 en-suite aircon cabins for couples, singles and families.