Buoyancy is not required in order for a Scuba diver to explore the underwater
world. It is required only when his session is complete, and he wishes to rise to
the surface, replenish his survival resources, and live to explore on another day.
Divers explore underwater.
He was he inventor of the SCUBA (Self-Contained Underwater Breathing Apparatus) equipment divers use to explore under the sea.
Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.Cleopatra's palace was found by underwater divers working in the ancient harbor of Alexandria.
There are many items underwater that are found in many places.
Sound travels faster underwater, but this does not mean that divers hear better underwater. It just means that the sound is heard more quickly.
I have seen this in tv. Some divers were underwater for about 3 minutes. I think it takes a life to achieve that.
Atlantis
Divers use substances with high density (ie. lead) to help them sink, and substances with low density (ie. air) to help them float. That way they control their bouyancy.
Divers usually increase their density by wearing a weight belt (which contains lead weights). Some divers also rely, to a lesser degree, on using steel tanks, which are more dense than aluminum tanks. To decrease their density, divers put air into a Bouyancy Control Device (BCD). Some divers may also control bouyancy by putting air into a drysuit if they wear one. Whereas the increase in density created by the weightbelt is normally fixed, the positive bouyancy provided by the BCD can be varied throughout the dive. Usually a divers net density will decrease over the dive - a diver with a full scuba tank has about 4.5 lbs of extra weight (the weight of the gas) over a diver with an empty scuba tank.
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about 200 ft.
Shanda pihhilips