Uploaded July 2026 | Updated September 2026, 2 weeks ago

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Josh Gates dives into some of the world’s most fascinating underwater mysteries and extreme ocean adventures. From uncovering Japan’s underwater “Atlantis” with rock formations near Yonaguni Island to searching shark-infested waters off Cape Cod for Black Sam Bellamy’s legendary pirate treasure, Josh faces incredible discoveries and many more adventures!
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About Expedition Unknown:
Josh Gates investigates the truth behind the world's most iconic and captivating legends. Leaving no stone unturned, his adventures take him around the globe as he immerses himself in the core locales linked to each tale.

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Josh Gates’ Underwater Mega Marathon 🌊🤿 Expedition Unknown | Discovery
youtu.be/P55VZzz2t-k