The largest freshwater fish in North America, the white sturgeon, seemed to be headed for extinction in the mid-1990s. Dozens of dead fish washed up on the riverbanks in British Columbia, Canada. Many people banded together to save the white sturgeon and it seems to have worked. Today their population is estimated to be about 50,000.

Read more about the white sturgeon rebound on National Geographic News.

Want more info on Zeb Hogan’s Megafishes Project? Visit the gallery.