Before using the camera underwater, perform a check to prevent leaks and malfunction.
To take photos under water, select Underwater in creative mode. Underwater offers a choice of Standard, Scuba, and Close up modes.
Photos taken under water have a blue cast. Selecting Underwater for creative mode lets the camera compensate for the blue cast of underwater lighting. If desired, you can manually adjust the balance between blue and green based on the preview displayed in the monitor.