This product uses the sea otter, urchin, and kelp forest phenomenon to explain trophic cascades, food webs/ chains, and ecosystem interactions. It sends students on an investigation to discover what happened in kelp forests when sea otters were eliminated.This activity can be student-ledPromotes literacy and problem solvingHas students make predictions and construct hypothesesUses real-world phenomenon This video (hyperlinked) is a great resource for students to watch AFTER the activity to confi