| Marine Plants of Hawai'iOrder Gelidiiales 
  
    | Pterocladia caerulescens |  |  
    | Description: dark green to blackish
      color; with flattened branches. |  
    | Size: 2cm high |  
    | Habitat: common in tide pools
      and on reef flats. Preferred food of
    green sea turtles (Chelonia midas) |  
    |  |      |