This is a documentary about undersea exploration. Colonel Gerst, an oceanographer, led the Carlisle and a group of professionals to explore the wonders of the undersea world in the Mediterranean, the Red Sea, the Persian Gulf, the Indian Ocean and other waters. The improved underwater camera follows divers to work deep into the depths of the sea floor that have never been reached, recording the results of exploration and the situation of undersea creatures. They rely on a variety of underwater tools to swim with all kinds of fish, explore undersea landforms, coral reefs and investigate the wreckage of the shipwreck. They have encountered seasonal sea storms, bloody faces with sharks and whales, and all kinds of ocean wonders and navigational anecdotes.
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