Naturally, the "lattice" is a large, algae-like plant. It grows mostly around the underwater geothermal vents that occur in the oceans of Narayan. Its roots are thick and long, and when the plant is well-nourished with the copious mineral sediment produced by the heated water, they can be nearly impenetrable; from the central stalk or stem they can reach nearly a mile of length with numerous tendrils and branches forming a weblike latticework.