22. 



anemones found on glacial erratics in the northern canyons. 

 These species have a very patchy distribution and occur in 

 high concentrations when they are present. The distribution 

 of the anemones is controlled by substrate availability, 

 because they are always attached to larger cobbles and boulders. 

 The second peak, between 1700 to 1800 meters, reflects the 

 high concentrations of the deep sea brittle star Ophiomusium 

 tymani found at these depths. 



Figures 6, 7 and 8 show the faunal density with respect 

 to depth for each of the three canyons, Baltimore, Lydonia and 

 Oceanographer respectively. In general, densities are higher 

 in the shallow water of both Baltimore and Lydonia Canyons. 

 Unfortunately, no comparable coverage was obtained for 

 Oceanographer Canyon. The peak in density in Baltimore Canyon 

 between 300 to 400 meters is due to the presence of Hyalinoeoia 

 artifex (Fig. 6) . In Lydonia Canyon densities are uniformly 

 high between 100 to 400 meters (Fig. 7) . The galatheid crab 

 Munida valida is found in high concentrations between 100 to 

 200 meters. However, as coverage in this region was limited 

 to only 160 m viewed, caution should be used in assessing the 

 universality of their abundance in this region. Between 200 

 to 300 meters the high faunal density is due to the presence 

 of small anemones, while between 300 to 400 meters both the 

 anemones and Hyalinoeoia avtifex are present in high concen- 

 trations. Below 400 meters the faunal density in all three 



