The Continuous Plankton Recorder is deployed from NOAA Ship Okeanos Explorer by the ROV crane.

The Continuous Plankton Recorder is deployed from NOAA Ship Okeanos Explorer by the ROV crane. Image courtesy of S. Oakes, NOAA Okeanos Explorer Program. Download larger version (jpg, 121 KB).

Continuous Plankton Recorder (CPR) is Being Towed
October 24, 2010

Continued from Okeanos Explorer's previous cruise from Guam to Hawaii, an instrument called a Continuous Plankton Recorder (CPR) is being towed about 10m deep behind the ship as she makes her way to San Francisco. As the CPR is towed, seawater enters the instrument and is filtered through a slowly advancing strip of silk mesh, sampling plankton. Today, the CPR reached the end of her second strip of silk mesh, and with it the successful sampling of 1,030 nautical miles of ocean. By the time Okeanos Explorer arrives in San Francisco, nearly 1,900 nautical miles of ocean will have been sampled during this cruise. Combined with the previous cruise, the data will provide a picture of plankton diversity across more than 5,100 nautical miles of the Pacific Ocean.'s crew conducts routine training and maintenance. The last manta net tow of the cruise was conducted this evening. Today's manta net results suggest Okeanos Explorer has left the Pacific "Garbage Patch". The ship completed its last of 3 time changes today, bringing it up-to-speed with the West Coast. We expect to arrive in San Francisco tomorrow morning.