1. A culture apparatus, comprising: a temperature-controlled room accommodating an incubation container incubating samples and maintaining inside thereof in a predetermined environment condition; an imaging section imaging the samples of the incubation container in the temperature-controlled room and generating data of a plurality of observing images; an image analyzing section performing an image analyzing process on the data of the plurality of the observing images obtained by imaging the incubation container at different times and generating image analyzing data including morphologic information which indicates incubation states of the samples and rate-of-change information regarding the morphological information based on the observing images; an input section receiving an input of a first searching condition regarding the morphological information and an input of a second searching condition regarding the rate-of-change information; and a search processing section conducting a search for an incubation container which meets the first searching condition and the second searching condition based on the image analyzing data.