David Shale / Launching CTD (conductivity, temperature, depth) water sampling equipment from research boat GO Sars. Atlantic ocean deep sea research

Doug Perrine / Grey reef shark (Carcharhinus amblyrhynchos) upper and lower teeth, on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Blue shark (Prionace glauca) tooth from upper jaw, right side, on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Snaggletooth shark (Hemipristis elongata) teeth from lower jaw, on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Snaggletooth shark (Hemipristis elongata) teeth from upper jaw, on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Whorl tooth shark (Helicoprion bessonovi) fossil mould of the spiral lower jaw tooth whorl, 245-290 million years, on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modif...

Doug Perrine / Shortfin mako shark (Isurus oxyrinchus) teeth from upper jaw on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Kitefin shark (Dalatias licha) jaws and teeth on display at Oceanographic Museum of Monaco, Principality of Monaco

Doug Perrine / Common thresher shark (Alopias vulpinus) tooth detail, on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Sixgill or Cow shark (Hexanchus griseus) tooth row from lower jaw on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Silky shark (Carcharhinus falciformis) teeth from upper and lower jaws on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Doug Perrine / Sandbar shark (Carcharhinus plumbeus) 2.08m specimen, lower jaw with teeth on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)