Skip to main content

When sharks swam the Great Plains

2,237,092 Views

13 Questions Answered

Exploring our Oceans

Let’s Begin…

If you’ve ever been to, lived in, or even flown over the central swath of North America, then you’ve seen the remnants of what was a uniquely fascinating environment. Scientists call it the Western Interior Seaway, and at its greatest extent, it ran from the Caribbean Sea to the Canadian Arctic.

What geological events led to the formation of the Western Interior Seaway?

Sign in to answer question

Watch the video and finish the Think section to complete the lesson.

About Exploring our Oceans

Exploring our Oceans offers insight into the scientific marvels of the marine world, and the part you can play in uncovering the ocean's mysteries and safeguarding its future. From biology to physics to engineering, understanding our oceans involves a multitude of scientific approaches. Dive into our curated videos and supporting lesson materials, and find out how you can be a part of it all.

Meet The Creators

  • Video created by PBS Eons
  • Lesson Plan created by Luka Seamus Wright

More from Exploring our Oceans