на больших расстояниях myth sharks sharks tiny amounts of chemicals sharks American Museum of Natural History sharks American Museum of Natural History over long distances one part per 25 million one part per million one part per 25 million žralok cítit svou kořist over long distances sharks на больших расстояниях sharks shark information site over long distances one part per 25 million sharks one part per 25 million American Museum of Natural History American Museum of Natural History American Museum of Natural History American Museum of Natural History American Museum of Natural History American Museum of Natural History très grandes distances an Olympic-sized pool one part per 25 million American Museum of Natural History over long distances one part per 25 million