Expedition 37: SCTLD in The Bahamas After missing 2020 reef surveys due to COVID-19, Perry Institute for Marine Science scientists were finally able to return to Grand Bahama Island and the Abaco island chain to assess reefs for signs of Stony Coral Tissue Loss Disease (SCTLD) infection and recovery. R/V ANGARI Expeditions Coral Reefs Fish Adult Grades 6-8 Grades 9-12 Grades K-5