<;P>;PROBLEM TO BE SOLVED: To provide a compact data logger apparatus attached to a moving body, such as a mammal, reptile, amphibian species, birds, fishes, crustacea and mollusc, and accumulating the position of the moving body and the environmental data. <;P>;SOLUTION: The data logger apparatus 100 is equipped with a memory apparatus 103, a thermistor 104, a pressure sensor 105, a triaxial acceleration sensor 201 and a central calculation apparatus (MCU) 203. A data regarding the position of the moving body can be collected and recorded, in addition to the environmental data including the temperature and the pressure. <;P>;COPYRIGHT: (C)2011,JPO&INPIT