seen? The commonly seen triton snail is rather small and boring. It is usually
found under stones on our Northern shores.
Features: The larger
species of triton snails are more famous. They can grow to 50cm up
to 1m long! Many of them have a hairy covering on the shell. The operculum
is made of a horn-like material and is thick and brown. They are found
in sandy and rocky habitats, many are only found offshore in deeper
waters. They were previously placed in Family Cymatiidae.
What do they eat? Some large tritons
eat living sea stars and sea cucumbers. Others may prey on other snails
and on clams, or ascidians, sponges, hydroids. The prey is often first paralysed with
an acidic salivary secretion before it is devoured. They may spray or inject an anaesthetic to paralyse their prey. Some
tear off bits of flesh with their radula, while others liquify the
prey's flesh then suck up the soup with their proboscis.
Human uses: In the past, large
specimens were used a trumpets. Thus another common name for them is Trumpet shells.
|Some Triton snails on Singapore shores
Ranellidae recorded for Singapore
Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist
of The Molluscs of Singapore.
+Other additions (Singapore Biodiversity Records, etc)
sp. (Leopard triton snail)
Cymatium caudatum=^Ranularia caudata
Cymatium cutaceum=^Linatella caudata
Cymatium labiosum=^Turritriton labiosus
Cymatium pfeifferianum=^Reticutriton pfeifferianus
Cymatium tranquebaricum=^Monoplex tranquebaricus
Gyrineum natator (Common
Gladys Archerd Shell Collection at Washington State University
Tri-Cities Natural History Museum website:
brief description and photos.
the Gastropods 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.
- New record of the hairy triton shell, Monoplex pilearis, in Singapore, 29 November 2019, Calvin Leow Jiah Jay & Joash Tan, Singapore Biodiversity Records 2019: 148 ISSN 2345-7597, National University of Singapore.
- 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.
- Wee Y.C.
and Peter K. L. Ng. 1994. A First Look at Biodiversity in Singapore.
National Council on the Environment. 163pp.
- Ng, P. K.
L. & Y. C. Wee, 1994. The
Singapore Red Data Book: Threatened Plants and Animals of Singapore.
The Nature Society (Singapore), Singapore. 343 pp.
- Abbott, R.
Tucker, 1991. Seashells
of South East Asia.
Graham Brash, Singapore. 145 pp.