Ceramium tenuicorne
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Ceramiales
- family: Ceramiaceae
- genus: Ceramium
- species: Ceramium tenuicorne
Sooke
British Columbia
CanadaSturkö
BlekingeSlite
GotlandTräslövsläge
HallandFärjestaden
Oskarshamn
KalmarLjunghusen
Ystad
SkåneÖregrund
Uppsala
SwedenBridgeport
West Haven
ConnecticutSolomons
MarylandBeaufort
North CarolinaNewport
Rhode Island
United States