Whale songs provide key insight into ocean ecology, allowing scientists to make estimations on the prevalence of the species in certain areas.

Scientist Roger Payne was the first to discover that whales could sing in 1967 during a research trip to Bermuda.

Scientists have been left seriously concerned after thousands of blue whales "went quiet" in the ocean. Researchers from the Monterey Bay Aquarium Research Institute (MBARI) in California have found that blue whale songs have dropped by nearly 40 per cent over the past six years.

A study led by Monterey Bay Aquarium Research Institute scientists reported distinct trends in the songs of humpback whales and blue whales.