Digital Library Search
![Figure 20 ship4085.jpg Figure 20](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4085.jpg?itok=k2hYwDr8)
Description
Figure 20. Horizontal shutter plankton net first invented by Prince Albert I ofMonaco in 1889. Left: view of the assembled unit. Right: the messenger totrigger operation of the unit. This net would be lowered to a specified depthand then a messenger sent down the line to open it and capture drifting fauna at depth. This was first tested by Prince Albert I off Madeira in 1889. (Image credit: Oceanographic Museum of Monaco)