Endangered dolphins are a huge concern in our actual society. This would create a huge imbalance in the food chain. No dolphins to eat some creatures then there would be too many. Too many of them mean less food for each one and since their food might be marine plants, they will not grow fast enough to feed everyone. One of the three reason is both tuna and dolphins follow the same routes; dolphins get caught in the fishermen's nets which are meant to catch tuna. Dolphins are being killed just because they are not purposely to caught them.
Another reason is fishing for use in human's cuisine. Nowadays, dolphins are protected by laws but nonetheless between 200,000 and 500,000 dolphins were victimized by fishermen during the 1960s. Some laws protect dolphins, it allows a certain amount of dolphins to be accidentally caught which still has a negative impact on the dolphins' species. The most major reason is Pollution. Since humans are polluting rivers, seas and oceans, it affects dolphins. Since the dolphin is at the top of the food chain, the chemicals that pollute its habitat create the highest level of concentration of these pollutants in its body. As a result, diseases, difficulty to reproduce or even death take their toll on these species. We need to help in less pollution to the ocean. Dolphins are so cute but we are killing them. They also feel the pain when dying. Stop hunting or killing them.
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taken from http://dolphins-and-more.com/endangered-dolphins.html
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