designed by the survey team. The camera can be controlled by a diver, and is propelled at a constant speed. The Seaview SVII-S has also been designed, and is a lighter, human-propelled version of the SVII which can be transported by a single person. Underwater tablets are used to control the cameras and observe real-time images, and have also been used for communication, especially with social media. As mentioned, ROUVs are used to sample deeper reefs. These are highly mobile, and can operate at low depths. These ROUVs also contain scientific equipment which can be altered depending on the sampling being carried out, and can carry out sampling. As with the low-depth cameras, these ROUVs are able to produce high definition geo-positioned images. Catlin Global Reef Record Data from the Catlin Seaview Survey has been used to construct the Catlin Global Reef Record, which was launched in 2013. This database contains images and data collected by the Catlin Seaview Survey and by other coral reef research. However, the huge photographic records generated by the Catlin Seaview Survey are the main aspect of this record. The Catlin Global Reef Record is freely available to scientists globally, and can be used to analyse these reef environments and monitor their change. References External links Catlin Seaview Survey Catlin Global Reef Record Google Maps and the Catlin Seaview Survey Ecology Marine biology Coral reefs Environmental research