Today, we’re getting in the winter spirit by spotlighting five remarkable marine animals that depend on cold and icy environments to thrive. 1. Narwhals Narwhals are often called the “unicorns of the sea” because of their long, spiraled tusk. Here are a few more fascinating facts about them: 2. Walruses Walruses are another beloved Arctic … Continue reading 5 Animals That Need Sea Ice to Thrive