taiwan is a densely populated island and highly developed area, which has many industrial development projects, especially along the west coast, where the ets populations of indo-pacific humpback dolphins live. based on data collected between 2002 and 2005, the ets population of humpback dolphins was less than 100 individuals. unfortunately, the newest data released in 2012 shows that only 62 individuals are left. it means during those 7 years, population of humpback dolphins is being destroyed constantly and severely. a preliminary examination revealed that the ets humpback dolphin population meets the iucn red list criteria for "critically endangered". without further protection and regulation, this population will go extinct quickly.