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  • Shipwreck search yields surprise discovery: Underwater volcano of asphaltadd to reading list  

    Posted on April 28, 2014 at 10:20 PM

    Underwater robots exploring shipwrecks that sank centuries ago off the coast of Galveston have discovered something scientists never expected to find: a strangely shaped structure that’s basically a spectacular tar ball.

    By Doug Miller / KHOU 11 News

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