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Video shows hundreds of manatees flocking to Three Sisters Springs in Crystal River Florida — it's a beautiful sight!

Despite the change in endangerment status, manatees in Florida springs and coastal waters need our help. Here's how you can take action to save these creatures!

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Do you want to help save manta rays around the world? Take action with the Manta Trust to help conserve our ocean planet!

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Founder of Ocean Defenders Alliance, Kurt Lieber helped establish California's MPA network, which protects 16 percent of state waters.

Travel the world and make your underwater dreams a reality by applying to become a 2016 Rolex Scholar.