Neoralfsia expansa
- kingdom: Chromista
- phylum: Ochrophyta
- class: Phaeophyceae
- order: Ralfsiales
- family: Neoralfsiaceae
- genus: Neoralfsia
- species: Neoralfsia expansa
Praia
Praia
Cidade Velha
Ribeira Grande de Santiago
Mindelo
São Vicente
Cape Verde
Culebra
Culebra
Puerto Rico
Anahola
He‘eia
Napili-Honokowai
Hawaii
United States