Maps of spatial patterns of live coral cover and change by site at Puʻukoholā Heiau National Historic Site. A) Mean baseline survey of percentage of live coral cover. B) Mean resurvey of percentage of live coral. C) Percent change of live coral cover between the baseline and resurvey. By comparing underwater imagery collected in the early 2000s with new surveys conducted in 2022, researchers documented widespread losses in live coral cover across three protected coastal park units on the Island of Hawaiʻi . The findings highlight the long-term effects of repeated coral bleaching events and other environmental stressors on nearshore reef ecosystems.  Tracking Two Decades of Reef Change   The study focused on reefs within and adjacent to Kaloko-Honokōhau National Historical Park, Puʻuhonua o Hōnaunau National Historical Park, and Puʻukoholā Heiau National Historic Site.…