An introduction to Jeroo
Santong island is an uninhabited speck of land in the South Pacific Ocean. In the late 1980's, naturalist Jessica Tong discovered two previously unknown species that are unique to this island. One is the Jeroo, a rare mammal similar to the wallabies of Australia. The other is the large Winsum flower that serves as the Jeroo's primary food source.
Like its distant Australian relative, the Jeroo moves by hopping, but its movements are unique in all of nature. Each Jeroo only moves in one of the four main compass directions, and only turns in 90 degree increments. This unusual behavior continues to mystify the scientific community. Some believe that this behavior is somehow related to the geomagnetic lines, but others think that this is just a bizarre learned behavior.
Here's a map of one of the Islands along the Santong Archipelago. Nelson, a Jeroo represented by the blue arrow is looking at a net directly ahead of him which he must avoid at all costs or risk being trapped by the meddling humans. The only way to disable the net is to pick a flower and toss it directly at the net which will make that location safe for future travel.
Nelson (blue arrow) is at location (1,1) [row 1, column 1]