seen? The clam or its empty shells are sometimes seen on
some of our shores. The dead bivalves look like butterflies. These
clams are quick shallow burrowers in sandy shores in surf. They are
sometimes also called Donax clams.
Features: 2-3cm. Donax clams have
a two-part shell. The shell is rather triangular, generally smooth
with very fine grooves. In dead clams, the inside is sometimes purplish.
Surfer dudes! Surf clams actually
do surf the waves! They migrate up and down the shore by floating
with the waves and then rapidly burying themselves with their strong foot. By doing so, they
are able to move up and down the shore with the tides thus exploiting
food found in the different shore zones. This also helps them avoid
predators such as Moon
snails (Family Naticidae).
do they eat? They
are suspension or deposit feeders.
Human uses: Some are collected
for food by coastal dwellers. In the Philippines, one species
is collected in fairly large quantities.
clams on Singapore shores
Donacidae recorded for Singapore
Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist
of The Molluscs of Singapore.
faba on SeaLife Base: Technical fact sheet.
- Family Donacidae
the Bivalves section by J.M. Poutiers in the FAO Species Identification
Guide for Fishery Purposes: The Living Marine Resources of the
Western Central Pacific Volume
1: Seaweeds, corals, bivalves and gastropods on the Food and
Agriculture Organization of the United Nations (FAO) website.
- Tan SK & Low MEY (2013) Singapore Mollusca: 3. The Family Donacidae (Bivalvia: Veneroida: Tellinoidea). Nature in Singapore, 6: 257–263.
- 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.