Abstract
In this paper the forecast evaluation technique for the increase and decrease of the short-necked clam change in an environmental condition is considered by using the cell-automaton which is one of the artificial life techniques in this research for the benthic animal. The adaptability of this technique is examined. The cellautomaton is the method to pursue inhabiting animal's rise and fall according to an environmental change by the number of animals in the cell by dividing the area where the object animal is inhabited into a lot of cells.
We clarified that it was possible to forecast to some degree by giving a constant rule of an increase and the decrease concerning the change of the short-necked clam by using the cell automaton.