Pod of narwhals, northern Canada, August 2005. Image courtesy of Kristin Laidre. Image by Wikimedia commons. The narwhal’s distinctive spiral tusk, which can grow up to 10 feet long, has puzzled ...

Here's how Jorge the sea turtle prepared for the improbable journey—decades after he was found tangled in a fishing net off ...

Narwhals, often called the “unicorns of the sea,” are one of the most fascinating creatures in the ocean. Known for their ...