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Phylum Mollusca > Class Bivalvia > Subfamily Tridacninae
Burrowing giant clam
Tridacna crocea
Family Tridacnidae
updated Oct 2016
Where seen? This large clam with wavy 'lips' is sometimes seen on our undisturbed Southern shores, tucked into coral rubble and even among living corals. But it is often overlooked.

Features: At 10-15cm, it is the smallest of the giant clams. It is buried deep in living and dead coral or other hard surfaces in relatively shallow water near living reefs. It bores into the hard surface with a combination of chemical and mechanical methods that are still poorly understood.
The two-part shell has shallow fluted sculpturing on the surface. When submerged, all that can often be seen are its thick 'lips' of fleshy tissue.

Status and threats:
Like other creatures of the intertidal zone, they are affected by human activities such as reclamation and pollution. Trampling by careless visitors and over-collection can also affect local populations of young clams.


Thick fleshy 'lips' when submerged.
Pulau Hantu, Feb 06

Terumbu Raya , May 10
Photo shared by Loh Kok Sheng on his blog.

Short fluted scuplturing on shell.
Pulau Hantu, Mar 05

Burrowing giant clams on Singapore shores

Photos of Burrowing giant clams for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Lazarus Island, Mar 16
Photo shared by Loh Kok Sheng on his blog.
   


Terumbu Semakau, May 10
Photo shared by Loh Kok Sheng on his blog.

Terumbu Semakau, May 10
Photo shared by James Koh on his blog.

Pulau Semakau, Nov 09
Photo shared by Neo Mei Lin on her blog.


Pulau Biola, Dec 09
Photo shared by James Koh on his flickr.

Terumbu Salu, Jan 10
Photo shared by Loh Kok Sheng on his flickr.


Terumbu Berkas, Jan 10

Pulau Senang, Aug 10

Terumbu Pempang Darat, Jun 10
Photo shared by James Koh on his blog.


Terumbu Bemban, Jun 15
Photo shared by Loh Kok Sheng on facebook.
   

Links

References

  • Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The Molluscs of Singapore (pdf), Raffles Museum of Biodiversity Research, National University of Singapore.
  • Tan, K. S. & L. M. Chou, 2000. A Guide to the Common Seashells of Singapore. Singapore Science Centre. 160 pp.
  • Gosliner, Terrence M., David W. Behrens and Gary C. Williams. 1996. Coral Reef Animals of the Indo-Pacific: Animal life from Africa to Hawaii exclusive of the vertebrates Sea Challengers. 314pp.
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