Tools of the Trade

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To estimate the size of dolphin and whale populations, biologists use statistics and a scientific technique called mark-recapture. By taking photos of animals’ dorsal fins or flukes, we can identify individuals and check catalogues of known animals to see how frequently they have been sighted or whether they are new animals. The more new animals we see, the healthier our populations are doing. The better the cameras, the better quality the photos and the higher chance of having one that can be matched. #HICEAS2017

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