To provide a container for aquatic organism capable of preventing damage to aquatic organism generated by an air space without generating the air space inside the container.SOLUTION: A container 1 for aquatic organism includes a container body part 2 capable of storing water and aquatic organism, a lid 3 capable of opening/closing an opening of the container body part 2, a suction port 4 capable of sucking air inside the container body part 2, and a supply port 5 for supplying supply water containing gas containing oxygen into the container body part 2, in which the lid 3 leaks to the outside, surplus water exceeding the volume of the internal of the container body part 2.SELECTED DRAWING: Figure 1【課題】容器内部に空気層を生じさせることなく、空気層によって生じる水生生物への損傷を防止する水生生物用容器を、提供する。【解決手段】水生生物用容器１は、水と水生生物を収容可能な容器本体部２と、前記容器本体部２の開口部を開閉可能な蓋３と、前記容器本体部２内部の空気を吸引できる吸引口４と、前記容器本体部２へ酸素を含む気体を含有した供給水を供給する供給口５と、を備え、前記蓋３は、前記容器本体２内部の容積を超える余分水を外部に漏出させる。【選択図】図１
