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coral – n. a hard material formed on the bottom of the sea by the skeletons of small creatures
dredging – v. the act of removing mud from the bottom a river (or lake, etc) in order to search for something
oceanographer – n. a person who studies oceans
plume – n. the area where the river meets the Atlantic Ocean and fans out on top of the ocean water
photosynthesis – n. the process where plants turn water and carbon dioxide into food when the plant is exposed to light
destructive – adj. something that causes a very large amount of damage
bleaching – n. the harmful process when coral losing their color—turning white— due to stress, because of warming waters
