Are Hammerheads a Keystone Species?
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In this lesson, from Xpeditions, students learn what a keystone species is and then draw a simple food chain that helps illustrate why tiger sharks are considered a keystone species in Shark Bay. Next, students turn their attention to hammerheads, reading about the hammerhead diet and the reasons sharks (including hammerheads) are threatened by fishing practices. They consider how scientists might go about trying to determine whether hammerheads are keystone species, and they conclude by creating public education brochures or reports describing why this would be such a significant discovery. Less
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Topics and Grades
Grade: 6 to 8
Topics: Life Sciences, Geography, Science, History-Social Science