Conus planorbis   Born,  1778 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda

Size: 40-82 mm

Color: Ground colour white, sometimes suffused with cream to tan on last whorl, but rarely so on sutural ramps.

Medium-sized to moderately large, moderately solid to solid; form vitulinus slightly heavier than typical form but its relative weight may vary by 50% among specimens of similar size. Last whorl conical or ventricosely conical, outline convex at adapical fourth, almost straight below. Shoulder angulate. Spire low, usually lower in form vitulinus; outline slightly concave, sigmoid or convex. Larval shell of about 3 whorls, maximum diameter about 0.8 mm. Teleoconch sutural ramps flat, often concave in late whorls, with 1 increasing to 5-7 spiral grooves, spiral sculpture occasionally weak on last 2 ramps. Last whorl with variably raised and granulose spiral ribs on basal third or fourth, sometimes weakly ribbed above, ribs variably spaced but usually more closely set toward base.

Synonym (s)

Common Name (s)
• Planorb Cone
Economic Importance and Threats

Habitat:  Reef Associated,Rocky,Sandy
Trophic Level:  Secondary Consumer
Prey:  Eunicid polychaetes


Literature Source(s)
  • Apte,D (1998) The book of Indian shells Oxford University Press 115
  • Saad, MAH (1984) Proceedings of the Symposium on Coral Reef environment of the Red Sea King Abdulaziz University, Saudi Arabia 1-681 Available at - NIO, RC Kochi
  • Allen, GR (2005) Reef fishes of northwestern Madagascar RAP Bulletin of Biological Assessment 31 39-48
  • Kohn, AJ The Conus Biodiversity website Available at -
  • Eddie, H Hardy's internet guide to marine gastropods Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2012-10-10

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