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Amazingly made up of just one cell, this dark green alga was globular, firm with a suede-like surface and about 60 mm in diameter. There were a few on the shore and some were hollow.
Seen along the high tide mark with other sea weed - Westernport Bay
These grow attached to underwater rocky reefs by rhizoids. They are seen to a depth of 20 mts. They are self repairing and under water, appear to have a fluffy appearance with long filaments on the surface of the globe.