It's a yellow coral just three inches tall, that's been named Chromoplexaura cordellbankensis.
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The species of coral was first spotted in 2004 near Point Reyes National Seashore. But it was left untouched.
Last year, a research team with the California Academy of Sciences in San Francisco found it again and brought it up to the surface.
Scientists put it under a microscope and found it was different from any other coral species.
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The discovery was published this week in the Proceedings of the California Academy of Sciences.