Fig. 1 Acetabularia species. This colony is growing on a clam shell that is hidden in the photograph. Note the discs on the top of the delicate stalks that are drooping. The name means "little wine cup". Very common in calm intertidal areas.
Fig. 2 Caulerpa species. It is dark green. Note the roots projecting down from the runner and the feather like fronds growing up from the runner. The inch ruler at the bottom gives the scale. Common in outer reef lagoon.
Fig. 3 Caulerea species. This is a different species than in
Fig. 2.
Fig. 4 Halimeda species showing the large holdfast at the bottom. The name means "thinking of the sea" If one picks up a handful of sand, Halimeda plates will be predominate. Found in the outer reef lagoon.
Fig. 5 Individual fragments and branches from Halimeda.
Fig. 6 Penicillus species growing on a shallow sand bottom. Note the cup shaped tops with some sand and mud in the bottoms of the cups (arrow).
Fig. 7 Penicillus species, showing the holdfast at the bottom of the specimen.
Fig. 8 Udotea species showing the crenulated edges (arrow). Green "fans" easily seen from the piers.
Fig. 9 Avrainella, green and fanlike it is also easily seen from the piers.
Fig. 10 Seaweed, Sargassum species. The arrows point to the small, round flotation bladders (pneumatophores). Growing on the reef, it is also seasonally blown in in large masses from the Sargassso Sea.
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