Ribbon
sea lettuce
Ulva
reticulata*
Family Ulvaceae
updated
Aug 10
Where
seen? This
bright green seaweed is commonly seen on our Northern shores. Seasonally
abundant: at some times of the year, the shores may be blanketed in
a thick layer of this seaweed.
Features: Flat strips, thin and
translucent, glossy and smooth with many holes. Often crinkled into
twists, the strips are narrow (1- 2cm wide) and may be 20cm or longer.
There is a holdfast, usually embedded in the sand or some hard object
in the sand. But during the seasonal bloom, free floating chunks of
the seaweed can cover large areas of the shore. Usually bright green.
Sometimes confused with
Common
sea lettuce (Ulva lactuca) which forms broad sheets. |

Pulau Sekudu, Jun 04
|

Thin,
long strips with many holes.
Pulau Sekudu, Jun 04
|

There
is a holdfast embedded in the sand.
Chek Jawa, May 04
|

Changi, Apr 05
|
Ribbon
sea lettuce on Singapore shores

Tuas, Jul 06
|

East Coast, Jun 06
|

Tanah Merah, Apr 05
|
*Species are difficult
to positively identify without close examination of internal parts.
On this website, they are grouped by external features for convenience of
display.
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