Coral reefs are the largest organic structures on Earth, yet they're created through a symbiotic relationship between creatures about 3 millimeters long. Learn more about the the world's coral reefs (and how to protect them) in this episode.
Dive into the underwater world of coral reefs with Josh and Chuck as they explore these incredible "rainforests of the sea." The guys break down how these tiny three-millimeter creatures called polyps build massive limestone structures over thousands of years, creating homes for 25% of all fish species. They'll cover everything from the symbiotic relationship between coral and algae to the different types of reefs, plus the serious threats these ancient ecosystems face and what we can all do to help protect them.
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