The scuba diving equipment is more complex and heavier compared to that of snorkeling. It comprises a pressurized gas tank filled with Enriched Air Nitrox with extra oxygen: 36% oxygen and therefore less nitrogen to reduce decompression sickness. In the "single-hose" two-stage design, the first stage regulator reduces the cylinder pressure of about 200 bar (3000 psi) to an intermediate level of about 10 bar (145 psi). The second stage demand valve regulator, connected via a low pressure hose to the first stage, delivers the breathing gas at the correct ambient pressure to the diver's mouth and lungs. The diver's exhaled gases are exhausted directly to the environment as waste. The first stage typically has at least one outlet delivering breathing gas at unreduced tank pressure. This is connected to the diver's pressure gauge or computer, in order to show how much breathing gas remains.


At one time, a vast sand-dune wilderness (now the Sunset and Richmond districts) separated Ocean Beach from the rest of San Francisco. Development came in the late 19th century when a steam railroad was put in place to bring people to a fashionable resort on the outskirts of town. Later the Cliff House, and the now-gone Sutro Baths and Playland at the Beach amusement park was put in place. Today, Ocean Beach is still as popular for seaside drives, brisk jogs, and sunset walks as it was in the early 1900s.

Many people make the pilgrimage to Fiji to worship reefs resplendent in forests of lush, soft corals. But here’s the catch: you can’t necessarily find the best snorkeling spots near every island throughout the chain. Our top pick in the whole country is Somosomo Strait, found between the islands of Taveuni and Vanua Levu. And, yes, reefs do encircle the islands starting from shore, but to access the best of the best, namely Rainbow Reef, a boat tour is a must.

Besides the six-bedroom retreat on this sugar-colored South Pacific isle, the only other thing you'll find is a whole mess of water. So, naturally, water sports are the main draw (you know, other than the fact that it's a private island). Kakula offers a healthy supply of snorkels, kayaks, and paddleboards. Other island activities include massages, scuba diving, and deep-sea fishing. And speaking of fishing: if you can catch it, the personal chef will cook it.

Effect on Health Effects of breathing compressed air such as decompression sickness, nitrogen narcosis, oxygen toxicity, refraction and underwater vision. Greatest danger is not being spotted by jet skis & crafts, as a diver is often submerged under water with only a tube sticking out of the water. Contact with poisonous coral, dehydration and hyperventilation. Sun burn is also common with long hours.
These little coral islands are surrounded by excellent diving, snorkeling, and white sand beaches, and are filled with friendly locals. Private resorts litter the islands, and a vacation here is also very pricey. Luckily, Bangkok Airways offers cheap flights to and from Thailand. The best time to go to the Maldives is from November to May, when the weather is cool and dry. June through October sees wetter and hotter weather due to the monsoon season.
Situated in a huge hangar originally intended for the construction of cargo airships (though the venture went bust before any living airship made it out of the hangar), Tropical Islands is just off the Berlin-Prague highway, about 60 kilometers (37 miles) southeast of Berlin, in the middle of a dark wood in Brandenburg. A Malaysian investor realized the potential of the abandoned structure and brought the jungle of his home country to Germany. I remember when Tropical Islands was under construction: I was living in Berlin at that time and visited the site a couple of times.

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