Update: 2-15-16: This database is now accepting photographic documentation from citizen science divers in South Africa-- see link below for more information: http://www.aquarium.co.za/blog/entry/citizen-science-global-sevengill-shark-identification-project A citizen science project which allows local divers photo document encounters with Sevengill sharks (Notorynchus cepedianus). The Sevengill Shark Sightings is a portal through which data is entered into the 'Wildbook' pattern recognition algorithm program. Two pattern recognition algorithms are used to analyze the freckling patterns of each shark to determine which animals are returning each year. Sevengill Shark Zero Data Project: Didn’t see any Sevengill sharks on your dive today at La Jolla Cove (or False Bay, Cape Town)? No problem – – we still need your data! ‘Zero data’ is an important concept in long-term population studies in a fixed location with a single species: it’s also called ‘Presence/Absence’ data, meaning, we still want to know when you did *not* see a certain species in a given location, because it tells us a lot about why that particular species may or may not be present at certain times of the year. The portal can accessed through our main website at http://sevengillsharksightings.org/. And, it goes without saying, of course, if you *did* see some sevengill sharks, we certainly accept your photographs! http://sevengillsharksightings.org Or go directly to the Zero Data portal here: http://tinyurl.com/zr6qndz