Recordings Reveal Baby Humpback Whales ‘Whisper’ To Their Mothers : The Two-Way : NPR

Scientists recently tracked eight baby whales using special sound and movement recorders. The sounds the babies made turned out to be far different from the eerie songs of adult male humpbacks.

http://www.npr.org/sections/thetwo-way/2017/04/26/525609671/recordings-reveal-baby-humpback-whales-whisper-to-their-mothers