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.
Accoustic methods can sense caves and tunnels beneath the ocean.
( z1 possible :ARG1 ( z2 sense :ARG0 ( z3 method :mod ( z4 acoustics ) ) :ARG1 ( z5 and :op ( z6 cave ) :op ( z7 tunnel ) :location ( z8 beneath :op ( z9 ocean ) ) ) ) )