A Moran tugboat nears the stern of the vessel Golden Ray as it lays on its side in Jekyll Island, Ga. The ship capsized last month and is still there on its side, leaking an unknown amount of fuel and oil.
Stephen B. Morton/AP
Lindsay Cristides, a master's student in oceanography at Texas A&M University, anchors a research vessel in the Houston Ship Channel before taking samples of sediment left behind by Hurricane Harvey floods. The samples will be tested for contaminants including heavy metals.