The John D. & Catherine T. MacArthur Foundation Library video project.
Summary:
Host David Attenborough traces the evolution of three types of marine invertebrates whose ancestry began 600 million years ago, namely jellyfish, mollusks and horseshoe crab. Shows examples found in Australia's Great Barrier Reef.
Series:
Life on earth, a natural history / by David Attenborough ; episode 2
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.