Amidst the seemingly endless stream of bad news we hear about the world’s oceans on a daily basis, here’s some good news: According to a new survey of sea life in the Pacific Ocean, endangered green sea turtles are making a lively comeback as populations along dozens of coral reefs in waters around Hawaii and other nearby regions either remained stable or increased from 2002 to 2015. The survey showed that what the scientists call “turtle density” — the estimated number of animals per kilometer based on the survey counts — had increased by as much as 8 percent each year in some areas. The scientists behind the survey called these findings compelling evidence that conservation efforts like hunting bans are working; in 1978, green sea turtles were designated as an endangered species after years of being hunted for meat.