Humpback Whales

Humpback whales sing most frequently where and when they [breed:feed] . But researchers have discovered that whales can sing [complex:index] songs even when diving and foraging, when it's neither the time nor the place for [mating:wrong] behavior. The study is published in the journal PLoS ONE. Researchers tagged ten humpback whales with suction-cup sensors and [tracked:departed] each mammal for a full day in Antarctic waters during the fall - the time and place when whales feed rather than breed. While the sensors picked up background song near all of the whales, [two:Five] individuals performed long, complex songs more suited to mating [behavior:favor] . They even sang while on feeding lunges more than 100 meters below the surface.