1) Why would scientists be looking at a species to see if it was actually more than one species?

2) How can discovering this new species of dolphin help the Australian government protect all its dolphins?

Article Summary:
The article which these questions are from is about a new species of dolphins which was discovered off the northern shores of Australia. These dolphins are classified as mammals as they do no lay eggs, they breathe air and are warm blooded. This new species of dolphin is a type of humpback dolphin, named for the small hump below their dorsal fin.