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| Plate 1.--Classification: SYSTEM Marine, SUBSYSTEM Subtidal, CLASS Rock Bottom, SUBCLASS Bedrock, WATER REGIME Subtidal, WATER CHEMISTRY Euhaline. This underwater photograph shows colonies of common sea fans (Gorgonia ventalina) and other gorgonians living on bedrock. Bare rock is visible in the center and lower left corner of the photo. (Monroe County, Florida; July 1969; Photo by E. T. LaRoe) |
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| Plate 2.--Classification: SYSTEM Marine, SUBSYSTEM Subtidal, CLASS Reef, SUBCLASS Coral, WATER REGIME Subtidal, WATER CHEMISTRY Euhaline. This underwater photograph shows corals (Acropora and Porites) as well as several species of gorgonians. (Monroe County, Florida; August 1970; Photo by E. T. LaRoe) |
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| Plate 3.--Two habitats are shown here. Classification of landward (lighter) zone: SYSTEM Marine, SUBSYSTEM Intertidal, CLASS Rocky Shore, SUBCLASS Bedrock, WATER REGIME Irregularly Flooded, WATER CHEMISTRY Euhaline. Classification of seaward (darker) zone: SYSTEM Marine, SUBSYSTEM Intertidal, CLASS Aquatic Bed, SUBCLASS Algal, DOMINANCE TYPE Fucus spiralis, WATER REGIME Regularly Flooded, WATER CHEMISTRY Euhaline. Subordinate plants in the aquatic bed include rockweed (Fucus vesiculosus), knotted wrack (Ascophyllum nodosum), and Irish moss (Chondrus crispus). This photo was taken at low tide. (Newport County, Rhode Island; July 1977; Photo by F. C. Golet) |
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| Plate 4.--Two habitats are shown here. Classification of landward (lighter) zone: SYSTEM Marine, SUBSYSTEM Intertidal, CLASS Rocky Shore, SUBCLASS Rubble, WATER REGIME Irregularly Flooded, WATER CHEMISTRY Euhaline. Classification of seaward (darker) zone: SYSTEM Marine, SUBSYSTEM Intertidal, CLASS Aquatic Bed, SUBCLASS Algal, DOMINANCE TYPE Fucus vesiculosus-Ascophyllum nodosum, WATER REGIME Regularly Flooded, WATER CHEMISTRY Euhaline. Most stones are larger than 30.5 cm (12 in) in diameter. (Washington County, Rhode Island; July 1977; Photo by F. C. Golet) |