Table 254.— Bathymetric occurrence of Gemma gemma, 

 based on 33 samples and 2,211 specimens. 



Table 258. — Bathymetric occurrence of Pitar morrhuanus. 

 based on 102 samples and 723 specimens. 



Depth range (m) 



Percentage of 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Samples 



94.0 

 3.0 

 3.0 



100.0 



Specimens 



99.8 

 0.1 

 0.1 



Depth range (m) 



Percentage of 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Samples 



35.3 



23.5 



32.4 



2.9 



4.9 



1.0 



100.0 



Specimens 



80.2 

 7.3 



10.0 

 1.0 

 1.4 

 0.1 



Table 255. — Occurrence of Gemma gemma in bottom sediments, 

 based on 16 samples and 408 specimens. 



Table 259. — Occurrence of Pitar morrhuanus in bottom sediments, 

 based on 89 samples and 255 specimens. 



Percentage of 



Bottom type 



Samples 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



6.2 

 75.0 



18.8 



Specimens 



79.6 

 15.0 



5.4 



Bottom type 



Percentage of 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Si Ity-sand 



Silt 



Clay 



Total 



Samples 



2.2 



2.2 

 61.9 

 24.8 



2.2 



6.7 



100.0 



Specimens 



0.8 



0.8 

 63.1 

 24.7 



1.2 



9.4 



100.0 



Table 256. — Bathymetric occurrence of Mercenaria mercenaria, 

 based on 9 samples and 21 specimens. 



Table 260. --Bathymetric occurrence of Pitar sp. , 

 based on 60 samples and 130 specimens. 



Depth range (m) 



Percentage of 



Samples 



Specimens 



Depth range (m) 



Percentage of 



Samples 



Specimens 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



100.0 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



25.0 



70.0 



3.3 



1.7 



23.1 



72.3 



3.8 



0.8 



Total 



Total 



100.0 



Table 257. — Occurrence of Mercenaria mercenaria in bottom 



sediments, based on three samples and eight specimens. 



Table 261. — Occurrence of Pitar sp. in bottom sediments, 

 based on 60 samples and 130 specimens. 



Bottom type 



Percentage of 



Samples 



Specimens 



Bottom type 



Percentage of 



Samples 



Specimens 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



33.3 



66.7 



25.0 



75.0 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



3.3 

 21.7 

 68.3 



5.0 



100.0 



1.5 

 23.2 

 69.2 



4.6 



163 



