Photos of sample processing and characteristics of S. californiensis copepods compared to other common zooplankton in light trap samples A stacked sieves used in light trap sample processing B large zooplankton retained on the 500 µm sieve C smaller zooplankton that could include S. californiensis copepodids retained on the 106 µm sieve D freshly preserved S. californiensis copepodids from a laboratory rearing experiment E comparison of common zooplankton caught in a light trap and retained on a 106 µm sieve including: a) a calanoid copepod, b) a cyclopoid copepod, c) a S. californiensis copepodid and d) a Daphnia species.