![Lm Otero FILE - Bleached coral is visible at the Flower Garden Banks National Marine Sanctuary, off the coast of Galveston, Texas, in the Gulf of Mexico, Sept. 16, 2023. Reef scientists say coral reefs around the world are experiencing global bleaching for the fourth time due to prolonged warming of the oceans. (AP Photo/LM Otero, File)](https://mapi.associatedpress.com/v2/items/e2be162e333f434b9eb43c08dc7c5281/preview/preview.jpg?s=680x)
FILE - Bleached coral is visible at the Flower Garden Banks National Marine Sanctuary, off the coast of Galveston, Texas, in the Gulf of Mexico, Sept. 16, 2023. Reef scientists say coral reefs around the world are experiencing global bleaching for the fourth time due to prolonged warming of the oceans. (AP Photo/LM Otero, File)
![Andrew Ibarra In this image provide by NOAA, a fish swims near coral showing signs of bleaching at Cheeca Rocks off the coast of Islamorada, Fla., on July 23, 2023. Reef scientists say coral reefs around the world are experiencing global bleaching for the fourth time due to prolonged warming of the oceans. (Andrew Ibarra/NOAA via AP)](https://mapi.associatedpress.com/v2/items/5fef285d165744769aa407df8061949e/preview/preview.jpg?s=680x)
In this image provide by NOAA, a fish swims near coral showing signs of bleaching at Cheeca Rocks off the coast of Islamorada, Fla., on July 23, 2023. Reef scientists say coral reefs around the world are experiencing global bleaching for the fourth time due to prolonged warming of the oceans. (Andrew Ibarra/NOAA via AP)