Diver-collected jellies from NOAA Ship Ronald H. Brown RHB0603 in the Sargasso Sea from April 2006 (CMarZ_2004-2010 project)

<p>Blue-water, or tethered open-water, diving is a simple technique that allows observation, photography, and collection of undamaged live zooplankton, particularly larger gelatinous forms that are commonly damaged or destroyed in nets. During the CMARZ cruise, 8 dives were made by Larry Madin and Erich Horgan, assisted by RV Brown crew members, Lt. Liz Jones, Ens. James Brinkley and 1st Asst. Engineer Keegan Plaskon. Dives were supported by the RV Brown's RHIB workboat, driven by Phil Pokorsky. We made at least one dive at each station, with 5 during daylight and 3 at night.</p>