Fact Friday

Ctenophore floating thru the water column.

Modern ctenophores, or comb jellies, are soft-bodied, meaning they are 95% water and have no hard body parts.  Ctenophore fossils from the Cambrian period indicate that the ancient form of these creatures had a hard skeleton.  Scientists believe this skeleton was part of a trend to “armor up” during the Cambrian due to intense predation.

Photo Credit: Ken Marks

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For Students

For Students

Below are online student worksheets that will reinforce and extend the knowledge you will learn in each unit of the Coral Reef Ecology Curriculum. There are three types of worksheets: Lessons, Watch It! worksheets that accompany educational YouTube videos, and Read It! worksheets that accompany our blogs.