In the Arctic, this is especially important, because not only do Arctic marine mammals have to hear each other, but they also have to listen for cues in the environment that might indicate heavy ice ahead or open water.
Di kutub, ini sangatlah penting, karena tidak hanya mamalia laut perlu mendengar satu sama lain, namun mereka juga perlu mendengar tanda-tanda alam yang mungkin menandakan es besar di depan mereka atau perairan terbuka.