Newborn humpback whales "whisper" to their mothers to avoid being detected by predators such as killer whales, new research suggests. Killer whales hunt young humpback calves in this region. Male humpback whales are opportunistic breeders who compete for mating partners and don't play a role in the lives of their young. There are two major humpback whale populations, one in each hemisphere. Shipping problemsThe humpback whale population that feeds in North Atlantic waters each summer was removed from the Endangered Species Act last year.

Source: CBC News April 28, 2017 16:20 UTC