This is a great culminating activity for your ocean animal unit. It includes a Venn Diagram, comparing and contrasting dolphins and sharks, and a writing graphic organizer, to help your students write about what they learned. The large Venn Diagram pieces fit the Venn Diagram pocket chart, or, can be used in a regular sized pocket chart. You can also attach magnets and hang it on your board. It also has a Venn Diagram for your students to complete independently.