> cetaceans have refined their sonar to the point of using it as a weapon
> against fish. Perhaps there are a couple of Uz hero cults that teach
> this secret for Darksense.
Definitely, given the uzuz ability to "kill with a glance." Sandy and Greg
likely had this in mind.
I thought there was also a species of bat that had also developed a
similar ability, using it to confuse/stun insects and make them easier to
hunt...?