An Oyster Toadfish in the channel connecting Potter and Pt. Judith Ponds. It was using a cavity under a piece of wood. Found it the day before, but didn't have my camera, thankfully it was still there today (perhaps a male guarding a nest). I hear them often, but this was the first I actually found.

Link in comment no longer works, try this one:
https://dosits.org/galleries/audio-gallery/fishes/oyster-toadfish/