I think that AOI UH-EPL10 with Olympus PEN E-PL10 and 14-42EZ kit lens are very interesting option for underwater photography. You can have multiple settings and use your wet lenses or use dedicated lenses with interchangeable ports (60mm for macro or 8mm Pana/Oly_pro for wide angle).
This underwater case is lightweight and compact (734g on land weight / 26g underwter weight); extra protection with a Vacuum pump and Vacuum Analyzation and Wet Detection System (VWS) and secure lock; Optical Flash Trigger saves camera battery life and eliminates the use of the camera internal flash; ready to use out of the box with housing, lens port and lens gear included (to used with 14-42EZ kit lens).
Olympus PEN E-PL10 Specifications
- Body type: Rangefinder-style mirrorless
- Size: Four thirds Live MOS
- Processor: TruPic VIII
- Max resolution: 4608 x 3456
- Effective pixels: 16 Megapixel
- ISO: 200 - 6400 (100 - 25600 expands)
- Stabilization: 3-axis (3.5 stops)
- Number or focus points: 121
- Screen size: 3" (1.040.000 dots). Touch
- Articulated LCD: Tilting
- Viewfinder: none
- Shutter speed: 60sec min // 1/4000sec
- Continuous drive: 14.1 Fps
- Flash: Built-in and External
- Flash Sync speed: 1/250 sec
- Storage: SD / SDHC / SDXC UHS-I
- USB: 2.0
- WIFI, Bluetooth: Yes
- Battery Life: 350
- Weight: 380 g (0.84 lb / 13.40 oz)


More info in this link--> https://www.aoi-uw.com/news/aoi_housing-UH-EPL10/