These acoustic methods are now expected to be useful for the long-range remote sensing of schools of fish as well as for distant ocean bottom characterizations.
Finding schools of fish can prove difficult even with the best equipment. 
( z1 possible :ARG1 ( z2 prove :ARG1 ( z3 difficult :domain ( z4 find :ARG1 ( z5 school :cxnsistof ( z6 fish ) ) ) ) :condition ( z7 equipment :ARG1-of ( z8 have-degree :ARG2 ( z9 good :ARG1 z7 ) :ARG3 ( z10 most ) ) ) ) )