Yunnan

Scientists discovered a fresh water Jelly fish in Wu-Shien lake of highlands(3,000metres) in Yunnan, China. The water is clean.
The animal lived on earth for 550 million years. It will be extinct soon.
The best prevention is to prevent pollution. Like New Zealand and other advance countries, the protected species are kept in natural environment and prohibit any road or mass access to the site is important.
Yes. That is to prevent too many human visitors to disturb the ecology balance of certain protected area. How about scientists? They can reach the site by helicopter and other method.