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| bivalves text index | photo index |
| Phylum Mollusca > Class Bivalvia > Family Mactridae |
| Big
brown mactra clam Mactra mera Family Mactridae updated Oct 10 Where seen? This large brown clam is often seen on our Northern shores in silty and sandy places near seagrass areas. Usually alone. According to Wong, it is perhaps the most commonly encountered member of the Family Mactridae in Singapore. Features: 6-7cm. The two-part shell is thick, smooth and usually unmarked, in shades of plain brown to purplish brown. It has a short siphon and usually lies buried just beneath the surface with its siphon sticking out. Sometimes, though, an unburied individual might be encountered on the shore. |
 Changi, Jun 06 |
 Chek Jawa, Dec 07 |
 Chek Jawa, Mar 04 |
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Big brown mactra clams on Singapore shores
 Changi, Jan 07 |
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 Changi, Aug 08  |
 Changi, Jun 07  |
 Pulau Sekudu, Apr 06  |
more photos of big brown mactra clams on Singapore shores
*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.
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