雅思听力

🎧 Listening Transcript

Today in our marine biology lecture, we will discuss the migration patterns of the humpback whale. These whales travel up to 16,000 kilometers each year from their feeding grounds in cold polar waters to breeding grounds in tropical seas. Interestingly, they do not feed during the migration, relying entirely on stored fat. Scientists track them using photo-identification of their tail flukes, which are unique like fingerprints. A recent study found that calves learn the migration route by following their mothers, not through genetic instinct. This challenges earlier assumptions that the route was purely innate.