bathymetric puzzle
sounder
hear what
you cannot see
Hidden bells rest below dark water. Sound the depths, follow the distances, and mark every bell.
◎A ping reveals the shortest water distance to the nearest bell.◆Reefs block sound. Distances bend around them.✦Switch to mark, then place the exact number of bells.
✦
the deep
answers
Ten waters sounded. Every hidden bell brought home.