Dictyota mertensii
- kingdom: Chromista
- phylum: Ochrophyta
- class: Phaeophyceae
- order: Dictyotales
- family: Dictyotaceae
- genus: Dictyota
- species: Dictyota mertensii
Duncan Town
Ragged Island
BahamasOistins
Christ ChurchWelchman Hall
Saint Thomas
BarbadosHamilton
Hamilton city
BermudaBoca de Yuma
La Altagracia
Dominican RepublicPort Antonio
PortlandAnnotto Bay
St. Mary
JamaicaKey West
FloridaMākaha Valley
Wai‘anae
Hawaii
United States