12 bewildering pictures that prove the Amazon is the last true wild frontier

12. Effects on the ocean

• via deltas.usgs.gov

  The Amazon River dumps so much fresh water into the ocean, that for nearly 100 miles off shore the ocean is less salty than normal.  Talk about powerful.

  Videos by InspireMore

  So there you have it.  The Amazon is wildly wild and wildly fascinating.  It is indeed a last frontier.

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