Figure 1. Some specimens of  planktonic copepods from marine water: a. Sapphirinidae, b. Oncaea sp. c. Farranula sp., d. Oithona sp., e. Macrosetella sp.,  f. Pleuromamma sp., g. Haloptilus sp., h. Eucalanidae, i. Calanidae, and j.  Mecynoceridae. Note the high morphological diversity.