Cnidaria is a broad phylum of 11,000 different species from jellyfish to coral. Most Cnidarians are marine species with a few freshwater examples. A lesson presentation explains the important characteristics of different species of...

Fifth graders examine the basic structure of corals and the concept of symbiosis. They watch a Powerpoint Presentation, develop an original pair of organisms living symbiotically, and create an edible model of a coral polyp.

In this science worksheet, learners research an unusual coral reef animal. A list of 22 animals is provided to choose from or students may choose their own. After researching the animal, learners illustrate the creature and write about...

Students examine the relationship between corals and zooxanthellae, identify stresses to corals, and explain coral bleaching.  In this sea life lesson students predict the effects of increased temperatures on coral reefs. 

In this sponges, cnidarians and worms worksheet, students complete a concept map on simple invertebrates. They fill in 11 blanks with the correct answers from the list.

In this marine science worksheet, students complete a crossword puzzle with 32 questions on sponges and cnidarian. They identify the different characteristics of sponges and cnidarian.

Of all invertebrates, insects by far are the most numerous. Scholars discuss invertebrates and then use a key to classify them. They see different examples and must describe features of each organism based upon the key. 

Students create a KWL chart to start the discussion on ocean animals. They practice sorting the animals into their different classifications. They use indexes, table of contents and glossary to find information.

In this cnidarians worksheet, students will read 4 descriptions and identify each as either the polyp or medusa form of cnidarian. Then students will complete 3 short answer questions about the characteristics of cnidarians. Finally,...

In this biology instructional activity, students identify and locate vocabulary terms related to various types of invertebrates. There are 21 biology terms located in the word search.

A marine environment covers the majority of the earth but is arguably the least understood. Teach young scientists about the characteristics of oceans and ocean species using an interactive online lesson. The in-person or remote learning...

Students observe and discuss the advantages of camouflage, then try their hands at designing a well-camouflaged fish.

In this crossword puzzle about Cnidarians worksheet, 6th graders write examples, words being defined, parts of the Cnidarians, and kinds of Cnidarians to complete the crossword puzzle review. Students write seventeen answers..

In this science worksheet, students study 12 vocabulary words which pertain to marine invertebrates. Students read the definitions which include pronunciation, part of speech and meaning of the name. Students then look at 16 organisms...

Students examine fire flies. They measure the frequency of light stimulus used by communicating fire flies. Students explore the concept of organisms using light to communicate. Students film the fire flies and quantify the duration...

Take a deep dive into oceanography. The online interactive allows for learners to board a submersible to dive to the bottom of the ocean to investigate sea vents. On the way down, individuals see different marine life at different...

Students observe the advantages of camouflage. They design a well camouflaged fish of their own.

Eighth graders investigate the presence of talc in the geologic record. The different characteristics of talc is covered. The lesson includes background information for the teacher.

Students, assigned an alphabet letter, do research on a sea animal whose name begins with that assigned alphabet. All of the assignments then be turned into a class book.

In this invertebrates worksheet, students read about the characteristics of the different groups of invertebrates. Then students complete 10 multiple choice questions.

This article examines a range of invertebrates. Among the invertebrates discussed included are jellyfish, coral, termites, gypsy moths, octopus, crayfish, and more.

This resource provides colorful pictures of sea animals interact with audio and the written vocabulary word as you move your mouse over the picture. This vocabulary would compliment a science unit on marine life.

Extensive site that contains much information about the various animal phyla. Each phyla gives photos, common examples, scientific names and references. Collection of 1630 websites about bio-diversity.

Wikipedia offers great information on Cnidarians, a phylum of animals including coral, sea anemones, jellyfish, sea pens, sea wasps, and more.