(CNN) — Scientists say they have the first recorded video evidence of narwhals using tusks not only to strike and manipulate fish during feeding but also engage in what appears to be playful behavior, ...

As much as I applaud scientific research that reveals nature’s secrets, I feel a sense of satisfaction when some natural mysteries remain mysteries. The narwhal is my favorite example. Narwhals are a ...

Have you ever seen a group of narwhals gather, such as they are in the above video? These unusual aquatic mammals are marked by a distinctive tusk, and are often claimed as the origin for unicorns, ...