Marine Invertebrates: The Other 97%

Invertebrates, the other 97% of animals, play an important role in all ecosystems as they act as waste control specialists and are the basis of most food webs on this planet. Dive into the unique world of marine invertebrates; from colorful corals and shy worms to flashy cuttlefish and spiny urchins, there is an invertebrate animal for every niche. Discover the fascinating world of marine invertebrates as you investigate their life history, learn more about their behavior, and explore where to find them.

Appropriate grade range: 6-12

Learning Goals

  • Recognize the importance of scientific classification and the characteristics used to organize animals.
  • Investigate the various invertebrate body plans, from simple to complex.
  • Discuss marine invertebrate phyla and identify the unique characteristics of each.
  • Compare the various reef types found around the world.
  • Analyze the anthropogenic impacts coral reefs face and construct solutions to mitigate the negative impacts.


  1. Life on Earth
  2. Rise of the Invertebrates
  3. The Invertebrates
  4. Coral Reefs
  5. Protecting the Reef

Course Components

  • Online Assessment
  • Student Guide
  • Narrated Video
  • Interactives
  • Objectives for each Chapter
  • Certificate of Completion


Alignment to NGSS