shelled snails text index | photo index
Phylum Mollusca > Class Gastropoda > Family Muricidae
Chunky drills
Thais sp.*
Family Muricidae
updated Aug 2020

Where seen? This heavy thick-shelled drill is often seen on large boulders and seawalls. Commonly seen on our all our shores.

Features: 3-6cm. Shell thick and chunky with variable patterns, some with a spiral pattern of squarish bumps, some with blunt spines. Shell opening wide. The operculum is brown.

Various species of Thais commonly seen on our shores have this kind of shells. They are difficult to distinguish with certainty in the field. On this website, they are grouped by external features for convenience of display.

Tuas, Feb 07



St. John's Island, May 07

Sisters Island, Aug 07
Pulau Ubin, Dec 09
Drill Babies: Some drills lay clusters of bright yellow egg capsules on hard surfaces. The egg capsules turn purple when the free-swimming larvae hatch.

Chek Jawa, Apr 08

*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.

Chunky drills on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


East Coast-Marina East, Jul 20
Photo shared by Vincent Choo on facebook.


Sentosa Serapong, Dec 20
Photo shared by Vincent Choo on facebook.

Pulau Tekukor, Jun 16
Photo shared by Ian Siah on facebook.
 
links | references | about | email Ria
Spot errors? Have a question? Want to share your sightings? email Ria I'll be glad to hear from you!
wildfactsheets website©ria tan 2008