Lightning Whelk

Sinistrofulgur perversum

Lightning Whelk

The Florida state shell and the only common large whelk that coils to the left.

Typical size
4 to 12 inches
How often it turns up
Common on the southwest gulf coast
Collecting
Usually legal to collect

Empty shells may be collected in most of Florida. Live collection is banned in Sanibel and restricted statewide.

Handling
Safe to handle

Old shells can have sharp broken edges.

How to tell it apart

  • Opening is on the left when the spire points up
  • Brown or purple lightning streaks on a cream shell
  • Low, stepped spire with small knobs

Found one?

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