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旅游摄影爱好者：如何才能成为水下摄影师？水下摄影是否很昂贵？
为水下摄影师的第一个要素是你要保证不会溺水。般说来，至少有两年以上的潜水经验才能开始从事水下拍摄。第二点也是很令人遗憾的一点，水下摄影的设备确实非常昂贵，因为除了许多特制的设备，你还需要不少辅助设备和你自己的潜水装备。
1888年1月13日，美国国家地理学会在华盛顿成立，时至今日，它已走过了116年。以“增进并普及地理知识”为宗旨。学会资助了对世界最远的角落的探索，同时还发行了数百种获奖的出版物，包括它的旗舰出版物-《国家地理》杂志，而拥有数以百万计的忠实订阅者。美国国家地理学会是世界上最大的非赢利性组织和教育机构之一，它拥有一千万会员。
1898年。这一年，贝尔掌舵国家地理学会。这位电话的发明者碰巧娶了学会创始人的女儿，而他从岳父那里得到的最重要的财产就是这本杂志。当时，杂志的发行量只有1000份左右，发明家让它有引人注目的增长，把一本枯燥乏味的学会会刊变成了风靡全球的《国家地理》杂志。
美国国家地理在一个世纪中的探索与发现，覆盖了美国国家地理学会的各项主题，比如：陆地生物、水下生物、世界文化和科学-从太空到考古到人文。图片抓住了自然界珍贵的瞬间和世界各地人们的生活。这些极富魅力的图片展现了美国国家地理学会摄影师高超的技艺和丰富的想像力。
（国家地理：national geographic）
参考答案:For the submarine photographer's first essential factor is you needs to guarantee cannot be drowned. Mentions, at least some two year above diving experience can start to be engaged in the submarine photography. Second also is very regretable, the submarine photographic equipment is truly extremely expensive, because except many specially makes the equipment, you also need many supporting facility and you diving outfit. On January 13, 1888, the US national geographic academic society was founded in Washington, at this point, it has passed through for 116 years. Take "promotes and the popular geography knowledge" as the objective. The academic society has subsidized to the world farthest quoin exploration, meanwhile has distributed the publication which several hundred kinds wins an award, including its flagship publication - "National geographic" magazine, but has the faithful subscriber which million counts. The US national geographic academic society is in the world the biggest non- profit earning organization and one of educational institutions, it has 10 million members. In 1898. This year, Bell operates the rudder the national geographic academic society. This telephone inventor married the academic society founder's daughter by chance, but he the most important property which obtains from wife's father there is this magazine. At that time, magazine 发行量 only had about 1,000, the inventor let it have the noticeable growth, turned an arid tasteless academic society published conference proceeding has been all the rage the whole world "National geographic" the magazine. The US national geographic in a century exploration and the discovery, has covered US national geographic academic society's each subject, for instance: Land biology, submarine biology, world culture and science - from outer space to archaeology to humanities. The picture held the nature to be precious instantaneous and the world each place people's life. These extremely rich charm picture has unfolded the US national geographic academic society photographer's excellent technique and the rich imagination.