If you like to make videos and photos in every situation, then you may want to consider a Liquid Image Underwater Camera Mask, especially if you plan to enjoy some time at the seaside.

Liquid Image produces some underwater masks with a built in digital camera, allowing you to capture photos and videos during your snorkeling and scuba diving.

The specifications of the entry level 301 model follow:

Image Resolution – 3.1 MP CMOS Sensor
Internal Memory – 16 MB NAND Flash Memory
External Memory Card – Micro SD Card
Video Mode – 18-25 FPS @ VGA
Status Display – LCD Display
Interface – USB
Power – 2 AAA 1.5 V Batteries (Alkaline, Lithium or NiMH)
Photographic Distance – 0.5 m to infinity
Auto Off System time – 120 seconds

This mask can be used down to 5 meters, and it allows you to take 3 Megapixel photos as well as VGA videos. The camera has a built in memory of 16 MB that can be expanded up to 2 GB with a microSD slot, thus guaranteeing about 1.5 hours of AVI video.

Here you can find some videos captured with the cameras.

Link: Liquid Image