
The Green Alga, Ulva intestinalis, Grass Kelp
This rock covered with algae shows the intertidal zonation. The higher portion of the rock is covered with a brown alga, Fucus gardneri, while the lower portion of the rock is covered with the green alga, U. intestinalis.

"Ulva intestinalis" is a green alga in the family Ulvaceae, known by the common names sea lettuce, gutweed and grass kelp. Until they were reclassified by genetic work completed in the early 2000s, the tubular members of the sea lettuce genus "Ulva" were placed in the genus "Enteromorpha".
Similar species: Ulvales

By gary fast
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Uploaded Sep 12, 2018. Captured Sep 11, 2018 15:09 in 315 Whaletown Rd, Whaletown, BC V0P 1Z0, Canada.