Why Whales Rely On Sound Instead
Whales effectively live in a world of sound because water makes light and smell nearly useless. Since light scatters and scents travel slowly underwater, sound becomes their only reliable super-sense.
Sound moves through water roughly three times faster than it does through air, making it the perfect tool for survival. For whales, sonar and complex songs are not just for fun; they are essential for finding food and navigating the deep. Because their environment is so loud, human-made noise from ships and industry creates a dangerous sensory fog. This constant din threatens to disrupt their ability to communicate or hunt across vast distances.
Source: Whale vocalization