The dolphin species in danger of extinction are the Indus river dolphin, which is a blind dolphin very small which live in the main river of Pakistan, the Indus
Regardless the reasons behind bringing a dolphin into captivity, it is important to know that dolphins are resilient to captivity.
Besides the common predators like big sharks and occasionally killer whales, humans are the top dolphin killers.
There are several organizations which are devoted to protect dolphins, however they have no further influence than exposing the atrocities made by humans and organizations against dolphins.
Saving dolphins is not a difficult task, it only requires some attention from all of us.