Kelp Forest and Sea Otters the Keystone Species NGSS 3-LS4-3; NGSS 3-LS4-4 NGSS Marine Science Lesson is ideal for teaching about kelp, parts of kelp, world kelp forest habitats, ecological balance and the kelp forest food web, physical and behavioral adaptations of sea otters, their diet, survival and much MORE! Interdependent Relationships in Ecosystems Unit ⭐️ Bundle & Save ⭐️Purchase Marine Biology Ocean Science NGSS Aligned Bundleto get this lesson PLUS other amazing marine science resour