Respuesta :
Answer:
I assume your doing this to give out points, if not then here it is.
They're blind
Step by Step explanation:
without being able to see and only hear you will need to follow the wave length in order to find where other friends are or parents, just like whales, whales can't see in the dark ocean so they use sound to find other whales.

Answer goes to the first person who did it before me
Explanation:
Hope ya have a good day giveing a 100 points if u fine my acc today