Figure 30. Closing device of the Apstein closing net. Left: open. Right:
closed. Devised by Carl Apstein in 1903 and used in the North Sea. This was
used for quantitative plankton studies and was first used in the North Sea in
1903.
Image ID: ship4096, Voyage To Inner Space - Exploring the Seas With NOAA Collect Photographer: Y. Berard Credit: Oceanographic Museum of Monaco
