Underwater Filming and Analysis
Aquenal utilises a range of underwater filming and sampling equipment, allowing surveying of diverse environments from offshore marine through to wetlands and other coastal habitats. Our Remotely Operated Vehicle (ROV) places Aquenal at the forefront of underwater filming technology, and is supplemented by a range of diver operated underwater video equipment and digital cameras. We have a fully contained dive unit with a team of commercially and scientifically trained personnel who are highly skilled at underwater assessments. Data loggers and meters are used to measure water quality parameters, currents and pressure, while remote sampling devices allow for efficient sampling of biological communities and sediments. A range of additional nets, traps and sampling devices are used to target specific marine taxa. …Further information
Aquenal operates primarily from a 6.7 m aluminium twin hull work boat, although we charter other vessels as appropriate to conditions and location, and use a Garmin/Omnistar™ Differential Global Positioning System (DGPS) capable of navigating to within 2 m of sampling points.
The types of equipment we use for underwater filming and field analysis include:
- SeaBotix LBV150SE-52 Remotely Operated Vehicle (ROV)
- Diver operated underwater video equipment and digital cameras with still and video capabilities
- Remote biological (e.g. Van Veen grab, benthic sleds) and sediment (e.g. Craib corer, box corer) sampling devices
- Yeo-Kal YK-611 water quality analyser, equipped with a multi-parameter probe
- Aquatec AQUAlogger 520P pressure logger for tidal measurement work
- Acoustic Dopler Current Profiler (ADCP) current meters
- A variety of additional biological, sediment and water sampling devices such as hand corers, plankton nets, seine nets, niskin water samplers, transect lines, and quadrats
Our Remotely Operated Vehicle (ROV) is used for collecting underwater video footage, and has advantages over divers in deep or high current environments, or where large numbers of multiple underwater surveys are required. The ROV can dive to 150 m with no restraints on dive times or number of dives, and has been used for a range of projects from marine ecological studies to inspections of submerged infrastructure (e.g. dams, bridges).
Diver surveys are also an important part of our work, particularly in shallow coastal environments where detailed filming and hand collection or photography of samples is required. We have a fully contained dive unit with a team of commercially and scientifically trained personnel who utilise digital underwater cameras and sampling equipment and are highly skilled at the in-situ identification of fish, invertebrates and aquatic flora.
Remote sampling devices are also used to sample benthic communities and sediments, while plankton nets, seine nets and a range of additional sampling devices are frequently used to sample marine fauna and flora. Water quality, currents and pressure are assessed using the appropriate instrumentation.
Laboratory analyses and equipment are described on our Benthic Ecology Laboratory page.