2 Undersea explorer
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2. ball has spent more than thirty years exploring under the sea. He pioneered the use of deep-diving submersibles and has been on more than 120 undersea expeditions. In 1973 and 1974 he explored the Mid-ATlantic Ridge,a huge undersea mountain range in the Atlantic. In 1977 he discovered 2.5-metre worms living in the sea near Ecuador,South America. He also discovered underwater volcanoes off the coast of California in 1979. Ballard was the perfect person to search the Titanic.