Discusses the ocean ecosystem and the role of the sea otter as a keystone species in helping to maintain it, describing the otter's place on the food chain and

Sea otters are a keystone species in their environment. If they were to disappear, the ripple effect on the plants and animals in the ecosystem would be profoun

Discusses the temperate forest ecosystem and the role of the gray wolf in helping to maintain it, describing the wolf's place on the food chain and what would h

Sea otters are good indicators of ocean health. In addition, they are a keystone species, offering a stabilizing effect on ecosystem, controlling sea urchin pop

Talks about each habitat and shows what would happen if the food chain was broken.