anthro aquatic arthropod big_penis copepod crustacean crypdick digital_media_(artwork) digital_painting_(artwork) erection genitals green_body green_penis huge_penis hyper hyper_genitalia hyper_penis male mature_male maxillopod nickelodeon painting_(artwork) penis plankton_(species) sheldon_j._plankton solo spongebob_squarepants vein veiny_penis
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