In the Water....
about 10 metres/30 feet most of the time but deep sea divers can go to depths of about 30 metres/90 feet
Most scuba divers just obtain open water certifications from recreational diver training agencies, such as PADI, NAUI, BSAC or SDI.Only military or commercial divers undertake vocational diving qualifications.
The best answer is probably no. Safe scuba diving relies heavily on a knowledge of physics, gas laws and even physiology. Since it generally takes place in the ocean, it often involves marine biology. In that respect scuba is far more reliant on science than most other activities. Generally, though, scuba is a recreational activity for most divers and a vocation for others.
SCUBA means self contained breathing apparatus. Most scuba divers wear neoprene hoods and these come in a variety of colours. I think you are talking about standard dress or hard hat diving where the diver has a big spherical helmet and lead boots. These divers are not SCUBA as they have air pumped from the surface. These helmets look brown because they are made of brass and copper which turns brown when it oxidises. If you polished it up, it would look gold in colour.
The signal flag that indicates scuba diver below is the Alpha Flag. The Alpha Flag is blue and white. It is most commonly utilized in European countries. In addition, the Diver Down Flag, which is a red field with a white diagonal stripe is ued to indicate a diver is below.
you can scuba dive anywhere in Florida. google scuba diving locations to find a place near you. the most popular place is the keys. i would suggest you travel farther south in the Caribbean to dive.
The "traditional" tattoo for U.S. Navy deep sea divers is the age old U.S. Navy Mark V (MOD 1) deep sea diving helmet. The tattoo is normally worn on the lower leg. This helmet is also the the rating badge and warfare device now worn on the left sleeve and upon the chest of U.S. Navy surface supplied aka "Deep Sea" Divers. It is strongly looked down upon for U.S. Navy SCUBA divers to consider wearing this tattoo and most know not to. U.S. Navy SCUBA divers have not completed the same rigorous training as their "Deep Sea Diver" counter parts, and are not authorized to bear the surface supplied diver insignia.
Most people catch lobsters by using lobster traps or pots. Some people are free diving scuba divers who swim in the water and catch the lobsters that way.
You don't need a licence to go scuba diving, but most people need to undergo formal training before they can scuba dive. Different agencies will take divers at different agencies, but the bigger agencies will usually not train anyone younger than 10 years old. However, some agencies insist that a student be 16 or 17 before learning to dive.
most training agencies suggest that SCUBA be taught after 9years of age and should not be engaged in for one is a heavy smoker or has respiratory problems. Scuba is a high stress anaerobic activity. Anyone at risk of heart disease or arterial sclerosis should not participate. This is not medical advice. Please consult a doctor before engaging in SCUBA diving. also: if they don't want to.... too many divers start SCUBA diving to be with somebody they care for, (husband, girlfriend, etc) but have no desire to actually SCUBA dive.
In recreational diving, most divers use compressed air (as in the normal air we breather at the surface). Some divers are also trained to use special gas mixes called Nitrox which have a higher oxygen content and lower Nitrogen. Professional (or commerical) divers tend to use more advance mixes such as Heliox or Trimix which combine Oxygen, Nitrogen and Helium.