Dolphins are endangered species because of human threats.
Human threats involve pollution (oil spills, garbage, and fertilizers), fisheries industry (marine traffic, over-fishing), disturbance, harassment, and sound pollution.
Dolphins are endangered because humans have destroyed their habitat. More than ten thousand dolphins die each year because of humans.1 The majority of dolphins, who die, are caught into nets, especially tuna nets. This is so because dolphins follow the same directions as the Pacific tunas and therefore they very often swim into entrapment. This enormous amount of dead dolphins every year has given people a though to do something about that. Under the pressure of wildlife activists and common citizens, many world regions have adopted a “dolphin safe” nets. This means that with these nets tuna is guaranteed to be dolphin safe. However, there are still many doubts about the truth whether it is really so. …