. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. I. A narrow sand channel slowly being overgrown by a large colony of M. annularis illustrates the hollowness of the spur and groove zone on Long Key Reef. J. Diver Karen Lukas examining an exceptionally large colony of M. mirabilis at the base of Long Key Reef, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institut

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. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. I. A narrow sand channel slowly being overgrown by a large colony of M. annularis illustrates the hollowness of the spur and groove zone on Long Key Reef. J. Diver Karen Lukas examining an exceptionally large colony of M. mirabilis at the base of Long Key Reef, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C. : [Smithsonian Press]

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