The blue whale
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The blue whale is the largest animal in the world, reaching up to 30 meters long and weighing 180 tons. It lives in the Indian and South Pacific Oceans, eating small crustaceans called krill. The blue whale is a marine mammal that can grow extremely large in size.
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Blue whales (Balaenoptera musculus) and fin whales (Balaenoptera physalus) are closely related species that have both experienced declines in population size. The vocalizations of these species provide data on populations sizes and migratory patterns, but the similarity of a subset of their vocalizations presents issues for automated processing. The seasonal variation, proximity to feeding areas, and correlation with feeding behaviors provide evidence that both the blue whale D calls and fin whale 40-Hz calls are feeding-specific calls. The overlapping frequency ranges and frequency modulated nature of the calls, the common genetic background of the two species, and the similar function of the calls are possible contributors to the difficulties in the detection and accurate classification of these calls. Detectors which target downswept call types within this frequency range will experience high recall of both blue whale D calls and fin whale 40-Hz calls, which would require further human annotation to classify each.
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The blue whale
- 1. THE BLUE WHALE By Julia Domínguez
- 3. It's 30 metres long and it can weight 180 tons.
- 4. It's the largest animal in the world.
- 5. It eats a small crustacean called krill.
- 6. It leaves in the Indian Ocean and in the South Pacific Ocean.
- 7. THE END
- 8. BYE BYE!