Picture informations: Sturgeons

Author(s) Daniel Döhne
Licence owner Daniel Döhne
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence GFDL; cc-by-sa 3.0
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Several barbels, longitudinal rows of bone plates  

Picture informations: Spotted sharks

Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-nc 3.0
Spotted: dark blotches on light ground or white spots on grey  

Picture informations: Plain sharks

Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Typical shark shape, dark body, light belly  

Picture informations: Smooth hammerhead

Author(s) NMFS-PIRO Observer Program
Licence owner ias.pifsc.noaa.gov
Licence statement no copyright
Licence C0
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Smooth hammerhead  

Picture informations: Thresher shark

Author(s) NOAA Fisheries Apex Predators Investigation
Licence owner a.nefsc.noaa.gov
Licence statement no copyright
Licence C0
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Thresher shark  

Picture informations: Spiny dogfish

Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Spiny dogfish  

Picture informations: Six-gilled shark

Author(s) Operation Deep Scope 2005 Expedition: NOAA Office of Ocean Exploration; Harbor Branch Oceanographic Institution
Licence owner www.photolib.noaa.gov
Licence statement no copyright
Licence C0
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Six-gilled shark