Elegant
drill
Thais sp.*
Family Muricidae
updated
Aug 2020
Where
seen? This drill is often seen in groups on large boulders
on our Nothern shores. Sometimes, groups of small ones are seen under
large stones.
Features: 2-3cm. Shell thick but
not as thick as those of Chunky drills. With
variable patterns, some with spiralling grooves, others with a
spiral pattern of bumps or spiral of small blunt spines. Shell
opening wide. Operculum orange
or yellow.
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. |
Chek Jawa, Jan 05 |
Underside |
Chek
Jawa, May 05 |
Changi, May 05
|
Changi, Jul 05
|
Underside.
|
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. |
Changi, Jul 05
|
Yellow capsules yet to hatch,
Hatched capsules purple.
|
|
*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of
display.
Elegant
drills on Singapore shores |
Other sightings on Singapore shores |
Sembawang, Dec 09
Photo shared by Loh Kok Sheng on flickr. |
Punggol, Apr 19
Photo shared by Shawne Goh on facebook. |
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