| Marine Plants of Hawai'iDivision Chlorophyta -- green seaweeds
  
    | Bryopsis plumosa | 
 |  
    | Description: delicate soft feather-like appearance, dark
    green color. |  
    | Size: 2-12 cm long. |  
    | Habitat: shallow reef flats, and
      tide pools, and lower intertidal
    habitats with low wave action. |  
    | Photograph: Onekahakaha Beach Park, Hilo Hawai'i. 1996 |  
 
  
    | Codium arabicum |    |  
    | Description: a dark green spongy mass, characterized by
    rolling bumps or convolutions on surface. |  
    | Size: 0.5-3 cm thick and up to 15 cm wide. |  
    | Habitat: intertidal and reef flats. |  
    | Photograph: 
      Richardson's Beach Park, Hilo Hawai'i. 1996 |  
 
  
    | Codium edule |    |  
    | Description: forms spongy matlike mass of many
    intertwined dark green cylindrical branches. Branches attach whatever they contact. Looks
    like green rat's feet. |  
    | Size: 3-8 cm in diameter. |  
    | Habitat: reef flats, in lower intertidal habitats and in
      tide pools. |  
    | Photograph: 
      Richardson's Beach Park, Hilo Hawai'i. 1996 |  
 
  
    | Codium reediae |    |  
    | Description: dark green with flattened branches |  
    | Size: 1-2cm wide attached to bottom in one place,
    upright. |  
    | Habitat: in fairly calm water such as deep
      tide pools and on deep
    reef flats growing to 10cm in length. |  
    |  |  |