There are several species of dolphin, and their ranges and population sizes vary greatly. Maui’s dolphin, a rarer marine dolphin near New Zealand, only has a population of about 111. The Amazon River Dolphin is also threatened by poaching. The population of 30,000 is declining by about 7% a year.
The marine mammal that most of us are familiar with–the common bottlenose dolphin–has a more extensive range, but its populations are more difficult to track.
We do know that commercial fishing, which considers these dolphins a threat to their profits, is responsible for a good portion of dolphin kills. Recent studies find that designating Marine Protected Areas successfully creates safe zones for these mammals.
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