2020 absurd_res ambiguous_gender anomalocarid anomalocaris arthropod bedupolker big_eyes black_eyes brown_body crinoid crustacean detailed_background duo_focus echinoderm feral fin great_appendages group hi_res holding_character larger_feral marine orange_body purple_body sea_spider shrimp size_difference smaller_feral swimming tail_fin translucent translucent_body trilobite underwater wapita water