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Phylum Mollusca > Class Gastropoda > Family Muricidae
Knobbly drill
Morula sp.*
Family Muricidae
updated Oct 2016
Where seen? This drill is sometimes seen on our Southern shores. Usually in groups on boulders as well as man-made structures such as seawalls.

Features: 2-3cm. Shell thick, narrow and long with a spiral patterns of rounded bumps. The shell, however, is often obscured by encrusting plants and animals. Shell opening narrow with 'teeth, pale. Operculum brown.

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

Pulau Semakau, Dec 08

Teeth at narrow shell opening

Kusu Island, Dec 04

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

Knobbly drills on Singapore shores

Photos of Knobbly drills for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map
www.flickr.com
FREE photos of Drills. Make your own badge here.
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