Âm thanh chia sẻ

This mammal… can send its voice… across an entire ocean. Not meters. Not kilometers. Miles. It’s the blue whale. And its sound is unbelievably powerful. Low. Deep. Almost like a pulse. So strong… it can travel for hundreds of miles through water. Because sound moves faster and farther underwater. The blue whale uses these calls… to communicate. To locate others. To stay connected… across vast distances. Even when they’re far apart. You won’t hear it on the surface. But benea