ILC 1 expanded class j9a

      j9a    under sea level 

j9a	under sea level
j9aj	<-10000 m depth
j9ak	-1000 to -9999 m depth
j9akp	-1000 to -1999 m below sea level
j9al	-100 to -999 m depth
j9am	-10 to -99 m depth
j9an	-1 to -9 m depth
nya	benthic zones, bottom substrates  « j9a
nyb	profundal zones, bottom water, deep water  « j9a
nyc	oceanic zones, marine zones  « j9a

or

Facets key
0  under aspect      
1  at time           
2  in place          
3  through process   
4  made of element   
5  with organ        
6  from origin       
7  to destination    
8  like pattern      
9  of kind