To provide a waterproof camera with which an excellent photograph is obtained even under water where it is darker than on land by performing changeover to larger diaphragm by external operation.

In the waterproof camera constituted of a camera part in which film is loaded in advance and which is provided with at least a photographing mechanism and a film one-frame feeding mechanism and a housing part to coat the camera part in a watertight state, the camera part is provided with a changeover member by which the changeover to a first diaphragm whose diaphragm diameter is large and a second diaphragm whose diaphragm diameter is smaller than that of the first diaphragm is performed, and the housing part is provided with a changeover operation member capable of switching to the first diaphragm and the second diaphragm from the outside of the housing part by engaging with the changeover member.