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early plankton net
Large zooplankton net from 1965
Large plankton net goes over the ship's side
MOCNESS coming aboard
MOCNESS rectangular frame
Real-time data from the MOCNESS
Retrieving the sample jar
MOCNESS rectangular frame
Water enters the MOCNESS nets through a sturdy rectangular frame that is one of four standard sizes, allowing scientists to calculate plankton density in the water. Sensors mounted on the frame report water conditions to the ship during towing. Taken aboard the R/V Roger Revelle in the northwest Pacific, 2005. (courtesy Ken Buesseler, WHOI)