39. 



shallow-water fauna in Baltimore Canyon is dominated by five 

 end-members; the jonah crab Canaer borealis (10) , the burrowing 

 anemone Cerianthus bovealis and some unidentified anemones 

 (8) , the quill worm Hyalinoeaia artifex (3) , the galatheid 

 crab Munida valida (7) and sponges (4) . The fauna below 400 

 meters was generally dominated by rattails (2) , with occasional 

 occurrences of the red crab Geryon quinquedens (5) , the deep- 

 sea eel Synaphobranahus kaupi (6) and a small burrowing 

 cerianthid anemone (9) . 



In contrast the fauna of the northern canyons was 

 frequently dominated by different taxa. Comparable shallow 

 water coverage was not obtained in Oceanographer Canyon and is 

 very sparce in Lydonia Canyon. However, some of the same 

 species that dominate the shallow fauna in Baltimore Canyon 

 also dominate the fauna in Lydonia Canyon. These are Cerianthus 

 borealis and some small unidentified anemones (8), Munida 

 valida (7) and Hyalinoeaia artifex (3) . In both of the northern 

 canyons the fauna below 400 meters is now frequently dominated 

 by shrimp (1) . The fauna in Oceanographer Canyon between the 

 depths of 400 and 1099 meters is also occasionally dominated 

 by several of the taxa found in Baltimore Canyon; sponges (4) , 

 Synaphobranahus kaupi (6) , rattails (2) and Geryon 

 quinquedens (5) . At comparable depths in Lydonia Canyon the 

 only major difference is that sponges (4) less frequently 

 dominate the fauna. Coverage below 1100 meters was limited 



