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Unidentified species of algae. Possibly Endocladia spp. (nail brush seaweed or sea moss).
[OPRD_Hillmann.L_080810_BrownAlgae10]
Green algae is Hydrodictyon, the water net. It is a related to Pediastrum, but it forms a bag-shaped colony. Like Pediastrum each individual cell can develop into a new colony. You can imagine that since the colony contains thousands of cells Hydrodictyon can reproduce very rapidly. And unlike Pediastrum, Hydrodictyon can grow large, almost 30 cm. in length. Blooms of Hydrodictyon can be a real problem for water treatment plants.
A rare and unusual specimen of algae preserved in clear chalcedony. Originally it would have been growing in silica-rich run-off from geothermal hot springs. Kaueranga Valley, Thames
This was a stream flowing over the cliffs and down the cliff face covering the rocks with green algae. Shot at Sandymouth bay.
These algae live in near boiling water near the fault line that runs through New Zealand. Almost looks like an aerial shot of a delta but the "lake" is less than a meter long.
Piscina da Caieira, Trilha Atalaia-Caieira .
(Caieira Natural Pool, Atalaia-Caieira Hiking Trail).
Fernando de Noronha, Brasil. Apr-2010.