The Department of Conservation says a study published in the Science Journal proves the world faces a massive challenge to save endangered species.
The study says it would cost more than $97 billion per year for 50 years to meet the United Nation's global targets for conservation.
DoC says that means New Zealand would have to spend about $180 million dollars up front, and then $80 million per year until 2062.
That adds up to just over $4 billion to help save more than 600 species.
DoC deputy director-general Kevin O'Connor said a healthy ecosystem is essential for a healthy economy and an investment for the future.
