Phylum Chordata | Subphylum Tunicata/Urochordata | Class Ascidiacea
Beige sheet ascidians
awaiting identification*
updated Jan 12

Where seen? These thin beige sheets are often seen on our Northern shores, and sometimes on our Southern shores.

Features:
Colony irregular in outline, about 5-10cm in diameter, found near the mid-water mark, encrusting vertical and horizontal hard surfaces including artificial structures. Also under stones. Smooth, rubbery with many, tightly packed tiny spots. Usually beige in colour. Various kinds of flatworms (Order Polycladida) are sometimes seen on the sheets.

East Coast, Jun 09

Beige sheet ascidians on Singapore shores


Beting Bronok, Jun 10

Blue spotted flatworm on the ascidian.

Chek Jawa, Aug 05

These flatworms are seen on Beige ascidians growing beneath a stone.
Tanah Merah, Dec 10


Chek Jawa, Oct 01

Sentosa, Apr 10

St. John's Island, May 10


Sentosa, Apr 10

Beting Bronok, Jun 10

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