It’s been a delightful experience going out for boat survey, enjoying the moments with these beautiful and energetic creatures in the wild^^ Before entering HKDCS I didn’t have much knowledge about dolphins and the problems they are facing in the world, I was getting the wrong messages from sea aquariums about marine mammals captivity and welfare. I have misunderstood the information that whales and dolphins performing in aquariums are living in standard, don’t need to worry about food and having a good time with ‘smile’ on their faces. When I actually go on the boat survey to watch wild dolphins swimming freely, chasing fish occasionally and relaxing in the afternoon, I realized that captivity for them is unethical and causes several physical, mental health problems leading to high mortality rate. Two weeks after my internship has started, I slowly built up my knowledge about the ecology and ranging patterns of cetaceans, humpback dolphin and finless porpoise in particular. Every effort made in the field and slight changes of the environmental variables recorded on datasheet can have significant alternation on the results, therefore it’s crucial to keep the errors in minimum. Consistency is another essential part of doing line transect surveys, it allows a comparison of results over different temporal scales, and to detect changes from both population and individual levels.
robin
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