Humpback whales produce haunting, structured songs that can last hours, believed to attract mates or communicate across vast ocean distances. Known as "sea canaries," beluga whales emit high-pitched, ...

At birth, beluga whales are 5 feet long, roughly 100 pounds ... The waters of Cook Inlet are dark and turbid, so Cook Inlet belugas depend heavily on sound for foraging, navigation and communication.

At birth, beluga whales are 5 feet long, roughly 100 pounds ... The waters of Cook Inlet are dark and turbid, so Cook Inlet belugas depend heavily on sound for foraging, navigation and communication.