This interdisciplinary unit study introduces students to the narwhal—often called the “unicorn of the sea”—through the story Niko the Narwhal. Students explore how animals survive in extreme environments by examining adaptations, behaviors, and ecosystem relationships within the Arctic Ocean. The unit begins with an engaging informational narrative that follows Niko as he swims beneath Arctic ice, uses echolocation to find food, relies on blubber for warmth, and travels with his pod for