Choose a beach spot that is alive, meaning it has lots of fish and corals to see. If you pick a dead or boring spot for your first time, you likely will not understand why people like doing this. And the most popular spots that everyone goes to, are most likely not the best spots (because all the traffic has killed the reef). Still, don't go out alone (always have a partner no matter what). When you are new, it is comforting to see other snorkelers on the water before you get in so you can get a sense of what the conditions might be like.
Located just off the coast of Western Sahara in Africa, the Canary Islands are actually a Spanish archipelago and therefore owned by Spain. There are 7 main islands in the Canaries, with each offering something different for the intrepid traveler looking to kick back and enjoy island life. Tenerife is the largest of the islands and has a bit of everything, including one of the largest Carnival festivals in the world each February.
In Scuba diving, as one descends, in addition to the normal atmospheric pressure, water exerts increasing pressure on the chest and lungs—approximately so the pressure of the inhaled breath must almost exactly counter the surrounding or ambient pressure to inflate the lungs. By always providing the breathing gas at ambient pressure, modern equipment ensures the diver can inhale and exhale naturally and virtually effortlessly, regardless of depth.