John Fleng Steffensen,
M.Sc., lic. scient (Ph.D.)
University of Copenhagen
Marine Biological Section, Department of Biology
Strandpromenaden 5, DK-3000 Helsingør
Telephone - direct : +45 353 21986
Cell Phone: +45 60770490
Telephone - reception: +45 353 21950
e-mail primary : JFSteffensen @ bio.ku.dk
e-mail secondary: JFSteffe @ uw.edu
Announcement: 5 week summer course - Fish Swimming - for graduate students University of Washington, Friday Harbor Laboratories, WA, USA - July 23.rd - August 23.rd 2019.
Current Main Project: Old And Cold: Biology of the Greenland shark
Nielsen, J., Hedeholm, R. B., Heinemeier, J., Bushnell, P. G., Christiansen, J. S., Olsen, J., Bronk Ramsey,C., Brill, R. W., Simon, M., Fleng Steffensen, K. and Fleng Steffensen, J. (2016). Eye lens radiocarbon reveals centuries of longevity in the Greenland shark (Somniosus microcephalus). Science, August 12 2016, Vol 353, 702-704.
High-speed video of sailfish slashing a sardine school - recorded at 240 frames pr. second - replayed in slow-motion at about 10 times lower speed.
Fishing with baited traps south of McMurdo Station in Antarctica on the ice at approximately 77,5 S - 165 E. The water was about 700 meters deep and the ice +2 meters thick. Foto: J. F. Steffensen.
Shark attacking baitfish at Heron Island, Great Barrier Reef, Australia. Photo:J. F. Steffensen.
Updated July 2018.