The CalVet is also equipped with two different types of screens: 50 and 150 microns. There are 1000 microns in one millimeter. One millimeter is about the width of a strand of spaghetti. A single human hair is roughly 100 microns. 50 microns is about a half a human hair. So these screens capture anything greater than half a human hair. So many Protists and all bacteria would escape.
Today we caught many larval crabs... yes, crabs start there life cycle amongst and are a part of plankton community until they become too large and dense; When this happens, they become part of the benthic or sea floor community.
There were also terrapods. These little guys are small snails with wings and pseudo feet.
Both organisms are greater than 1000 microns... so they can readily seen with the naked eye...