This usually depends on the type of boat which you are jumping off. If you are leaving a large boat it is easier to simply walk of the edge of the boat with a large step (so you don't catch your tank on the boat as you leave) so that you can see where you are going and you are not rolling over. This also lets you get you get your arms round all your kit so it doesn't fly up and hit you in the face as you hit the water. When I was learning to dive, I learnt this the hard way!
When on a Rigid Hulled Inflatable boat or RHIB (similar to a large dinghy) it is usual to roll off the side backwards. This is because the boat is lower to the water and usually has higher sides so it is not safe to step over the sides with all of the heavy gear on.
Slowly
can all be conveniently found at your local dive stores next SCUBA DIVE CLASS. the safety rules for SCUBA divers is not a simple list, but a learning of the concepts of entering a hazardous environment.
Skin divers are people who dive into the ocean without using special equipment, unlike Scuba divers.
Because they should
They do not dive deep enough.
Dive knives can be purchased from a number of websites. Examples include Knife Depot, Scuba, Leisure Pro, Divers Supply, Divers Direct and Divers Warehouse.
scuba divers use pressure meter because the deeper down you go the more pressure builds upAdditiona depth gauge or a dive computer
groper
Most SCUBA divers dive with compressed air, which is normal atmospheric air compressed into a scuba tank.
Scuba divers who surface too quickly after a deep dive are prone to decompression sickness.
Bernie Chowdhury has written: 'The Last Dive' -- subject(s): Accidents, Biography, Fathers and sons, Scuba divers, Scuba diving, Scuba diving accidents, Shipwrecks
Some advanced divers dive using gas mixtures including Helium.