To stay at that depth. The process has to be gradually reversed before divers call re-surface. Although common in salt water aquariums and shallow O'ahu waters, Halimeda is some thing of a mystery plant. Strings of lobed structures is really one giant cell. To survive, the plant must quickly close wounds inflicted by human picking, fish bites or wave action.
Sexual reproduction is possible but Hawaiian species more often propagate by cloning.
The problem with cloning, says Smith, is a resulting lack of genetic diversity. An entire population of genetically identical individuals is more likely to succumb to disease or other threat than is a population of differing individuals. Improved understanding of algae will help scientists prevent or respond to such episodes. Smith also works on projects related to biofouling and coastal zone management. The beauty of this institution is our ability to collaborate.