Table 4-11. Fauna of the Intertidal Zones on Exposed Bedrock Shore 

 on the Maine Coast based on Data from 13 sites. 



Zone 



Taxa 



High intertidal: 



Barnacle: 



Rockweed: 



Irish moss: 



Littorina saxatilus (periwinkle) 

 Anurida maritima (spring tail) 



Balanus balanoides (barnacle) 



Mytilus edulis (mussel) 



with the following associated animals: 



Hyale nilssoni (amphipod) 



Oligochaetes 



Nematodes 



Littorina littorea (periwinkle) 



Littorina obtusata (periwinkle) 



Acmaea testudinalis (Chinaman's hat) 



Thais lapillus (dog whelk) 



Mytilus edulis (blue mussel) 



with associated animals, oligochaetes 



and nematodes 

 Modiolus modiolus (horse mussel) 

 Balanus balanoides (barnacle) 



Halichondria panicea (green sponge) 



Encrusting bryozoans 



Tonicella ruber (chiton) 



Acmae testudinalis (Chinaman's hat) 



Littorina littorea (periwinkle) 



Lacuna vincta (gastropod) 



Hiatella arctica (arctic clam) 



Lepidonotus squamata (scaleworm) 



Mytilus edulis (blue mussel) 



Oligochaetes 



Nematodes 



Modiolus modiolus (horse mussel) 



Balanus balanoides (barnacle) 



Gammarellus angulosus (amphipod) 



Carcinus maenas (green crab) 



Asterias vulgaris (starfish) 



Clumps of juvenile mussels may occur in damp places throughout the barnacle 

 and rockweed zones. In the Chondrus zone, the limpet Acmaea testudinalis , and 

 the starfish may be found. Other species commonly found in the Chondrus zone, 

 although less frequently, are anemones, various nudibranchs (shell-less 

 gastropods). Cancer irroratus (rock crab), Henrica sp. (blood starfish), 

 Ophiopholis aculeata (brittle star), and Strongylocentrotus droebachiensis 

 (sea urchin). 



4-83 



10-80 



