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NOVA Online: Titanic's Lost Sister (see bottom of page for navigation)
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SCUBA diver underwaterStrap on some SCUBA gear and dive in. SCUBA, which was invented by Jacques Cousteau and Emile Gagnan, stands for Self-Contained Underwater Breathing Apparatus. By carrying your own air supply, you'll be able to search underwater for several hours at depths of up to 50 m (164 ft).

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