Nearly two thirds of the earth is submerged underwater. This represents an entirely new and undiscovered world. The aquatic world is filled with plants, animals, physical features and other parts of nature that most land lubbers do not get the chance to see. The underwater vista is beautiful and filled with coral reefs, multicolored fish, fauna and physical features. The only way to experience such beauty and diversity is through Boston Scuba. However, this extreme sport has a couple of associated dangers that lurk in the water.

Among the most severe effects of deep sea diving is nitrogen poisoning. It occurs due to the effect of increased water pressure on the snorkeler and his equipment. Snorkeling tanks contain nitrogen and oxygen in varying amounts. As the depth of the dive increases, the gas in the tank becomes pressurized. This means that it increases in density and is thicker than at surface. The diver thus takes in more molecules of nitrogen per inhalation.

The bends is also a condition that works on the same principle of atmospheric pressure. When an individual is deep below the surface, the oxygen and gas in their bodies is highly compressed. Bubbles form within the blood stream and other sinuses within the body. In the event that an individual rises back to the surface fast, the bubbles expand quickly and result in intense pain.

Inexperienced snorkelers have the tendency to hold their breath while in water. Rigorous training and certification courses strictly prohibit this habit. Holding in air could result in bursting of lungs as the diver ascends back to the surface. This is attributed to the expansion of oxygen gas in the lungs as pressure declines.

Not much sunlight and heat reaches the bottom borders of an ocean. This means that water in the lower borders of the ocean is very cold. Where the water temperatures are below the body temperature, heat is drawn from the body. This could result in hypothermia and a host of other cold related illnesses.

Deep beneath the surface of the ocean lurk many animals. Many of them are unknown to the general human population. A couple of creatures found in deep seas are dangerous to human beings. They could attack divers for perceived intrusion into their habitats. Sharks, whales, stingers and poisonous snakes are all found in this unknown underwater habitat.

Within the skull and bones are millions of tiny air spaces. As snorkelers increase depth, the rise in water pressure creates a feeling of pain. The ear is most affected due to the presence of the ear canal. The mounting ear pressure could be relieved using a variety of methods referred to as equalizing. This entails pinching the nose, chewing or blowing the nose.

In order to fully enjoy the Boston Scuba diving experience, individuals are advised to undertake basic underwater training. It is important to know how to swim, breathe and float before attempting to dive. Such courses are offered in numerous colleges and institutions around the country.