This digital camera supports an SD|SDHC|SDXC memory card, which is typical of many waterproof cameras that are a comparable age to it. SD cards are by far the most common type of memory card. They are compatible with the majority of digital cameras.
There are a number of other digital cameras that support an SD|SDHC|SDXC memory currently available that you might want to consider including the Coolpix P7100 ($299.99), or the Coolpix P7100 ($299.99) both from Nikon or the Olympus Stylus Tough TG-830 which has a better Rating.
Digital cameras with a better memory card type that might also be worth looking at include the Pentax Optio WG-3 (Eye-Fi|SD|SDHC|SDXC and cheaper).