Donald Miralle/Getty Images
HONOLULU, HI - JANUARY 15: A school of manini fish pass over a coral reef at Hanauma Bay on January 15, 2005 in Honolulu, Hawaii. Many coral reefs are dying from water pollution (from sewage and agricultural runoff), dredging off the coast, careless collecting of coral specimens, and sedimentation. (Photo by Donald Miralle/Getty Images)
Climate change has been hard on the areas of the ocean that house coral reefs. All over the world reefs and some areas are experiencing huge die-offs.
Now scientists are looking for new ways to preserve them.
Mary Hagedorn is a marine biologist with the Smithsonian Institution, and she has pioneered a method for saving coral reefs.