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| ascidians text index |
| Phylum Chordata | Subphylum Tunicata/Urochordata | Class Ascidiacea |
| Photo index of ascidians on Singapore shores |
| 3-5cm long, with two 'fingers', white with orange or red stripes.On large boulders, jetty pilings. Commonly seen on our Northern shores. | 2-3cm, translucent blob stuck under stones with fine red bars at one opening. Sometimes seen on our Northern shores. | Each blob about 1cm across. Clusters of blobs on boulders and larger rocks, usually near base and under overhands. Also on jetty pilings. Commonly seen on our Northern shores. | Each blob about 1cm long. In clusters on seagrass blades or on coral rubble. Commonly seen on our Southern shores. | Each bubble about 1-3cm, translucent with two openings, in clusters under and on rocks on some of our shores. |
| 5-10cm. Slimy layers on rubble and big boulders. Sometimes seen on our Northern shores. | 2-5cm. On coral rubble and seagrasses and seaweeds. Sometimes seen on some of our shores. | 1-2cm sometimes larger. Blobs on coral rubble and jetty pilings. Sometimes seen on some of our shores. | 5-10cm. Rubbery blobs on hard surfaces and stones. Black, red, yellow, brown and beige. Sometimes seen on some of our shores. | 10-15cm. Rubbery blobs on hard surfaces and stones. Beige with shades of pale blue or green. Seen on some of our Southern shores. |
| 5-8cm. Rubbery blobs found near seagrasses. Dark blue background with bright orange spots. Sometimes seen on some of our shores. | 5-15cm in diameter. Irregular rubbery layer with many small holes and a few large holes. Sometimes seen on some of our shores. | 5-10cm in diameter. Irregular rubbery layer with many tiny spots. Common on our Northern shores. |
Ascidian species are difficult to positively identify without dissection and examination of internal parts. On this website, they are grouped by external features for convenience of display |
These are NOT ascidians
| It is a seaweed. | They are a cnidarians and look like blobs or rubber mats with their tentacles retracted. |
| how to tell apart blob-like lifeforms |