Maybe it eventually would. It might take a while to boil that much water. Maybe the energy generated is not enough to boil that much water. I am as clueless as you are my friend.
Here is another creature that uses the SONIC FUSION BLAST (my term, and probably incorrect)
Mantis Shrimp vs. Several Crustaceans (Crustacean Wars Clip Show)
damn... ornery bugger