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zoological illustration

anatomically_correct anatomically_correct_genitalia anatomically_correct_penis anatomy anatomy_reference animal_genitalia animal_penis balls brown_body brown_fur close-up description digitigrade directional_arrow disembodied_penis erection feet feral fully_sheathed fur genital_shot genitals gradient_penis hyaenid_penis imperial_unit information information_label long_penis male measurements metric_unit nipples number paws penis penis_sheet penis_shot penis_tip pink_penis quadruped reference_guide sheath simple_background solo species_sheet standing tagging_guidelines_illustrated text toes unit strana_(artist) hyena mammal spotted_hyena striped_hyena 2024 artist_name biological_illustration dated digital_media_(artwork) english_text hi_res multiple_images signature species_name technical_illustration zoological_illustration
anatomically_correct anatomically_correct_genitalia anatomically_correct_penis anatomy anatomy_reference animal_genitalia animal_penis balls brown_body brown_fur close-up description digitigrade directional_arrow disembodied_penis erection feet feral fully_sheathed fur genital_shot genitals gradient_penis hyaenid_penis imperial_unit information information_label long_penis male measurements metric_unit nipples number paws penis penis_sheet penis_shot penis_tip pink_penis quadruped reference_guide sheath simple_background solo species_sheet standing tagging_guidelines_illustrated text toes unit strana_(artist) hyena mammal spotted_hyena striped_hyena 2024 artist_name biological_illustration dated digital_media_(artwork) english_text hi_res multiple_images signature species_name technical_illustration zoological_illustration
4_wings ambiguous_gender antennae_(anatomy) blue_body feral flower green_body insect_wings lepidopteran_wings multi_wing plant purple_body text wings julio_lacerda nintendo pokemon arthropod burmy combee dragonfly drapion generation_4_pokemon hymenopteran insect kricketot kricketune lepidopteran moth mothim plant_cloak_burmy plant_cloak_wormadam pokemon_(species) skorupi vespiquen wormadam yanmega biological_illustration english_text technical_illustration zoological_illustration
4_wings ambiguous_gender antennae_(anatomy) blue_body feral flower green_body insect_wings lepidopteran_wings multi_wing plant purple_body text wings julio_lacerda nintendo pokemon arthropod burmy combee dragonfly drapion generation_4_pokemon hymenopteran insect kricketot kricketune lepidopteran moth mothim plant_cloak_burmy plant_cloak_wormadam pokemon_(species) skorupi vespiquen wormadam yanmega biological_illustration english_text technical_illustration zoological_illustration
ambiguous_gender beak biped claws feathered_wings feathers feral realistic realistic_anatomy text white_body white_feathers wings young young_ambiguous young_feral julio_lacerda nintendo pokemon altaria avian bird blaziken combusken generation_3_pokemon pelipper pokemon_(species) swablu swellow taillow torchic wingull biological_illustration english_text technical_illustration zoological_illustration
ambiguous_gender beak biped claws feathered_wings feathers feral realistic realistic_anatomy text white_body white_feathers wings young young_ambiguous young_feral julio_lacerda nintendo pokemon altaria avian bird blaziken combusken generation_3_pokemon pelipper pokemon_(species) swablu swellow taillow torchic wingull biological_illustration english_text technical_illustration zoological_illustration
ambiguous_gender anatomy anatomy_reference beak duo educational feet feral foot_focus green_body green_scales hoof_fetish hooves horn markings nail nails open_mouth pseudohoof scales simple_background striped_markings stripes text white_background tm9380 dinosaur hadrosaurid ornithischian ornithopod parasaurolophus prehistoric_species reptile saurolophus scalie biological_illustration english_text technical_illustration zoological_illustration
ambiguous_gender anatomy anatomy_reference beak duo educational feet feral foot_focus green_body green_scales hoof_fetish hooves horn markings nail nails open_mouth pseudohoof scales simple_background striped_markings stripes text white_background tm9380 dinosaur hadrosaurid ornithischian ornithopod parasaurolophus prehistoric_species reptile saurolophus scalie biological_illustration english_text technical_illustration zoological_illustration
ambiguous_gender dorsal_fin feral fin open_mouth red_background scientific_name sharp_teeth simple_background tagging_guidelines_illustrated tail tail_fin teeth aevris catfish fish mackerel marine salmon salmonid_(fish) scombrid scombriform scorpaeniform sculpin snapper tuna wolffish 1:1 biological_illustration hi_res technical_illustration zoological_illustration
ambiguous_gender dorsal_fin feral fin open_mouth red_background scientific_name sharp_teeth simple_background tagging_guidelines_illustrated tail tail_fin teeth aevris catfish fish mackerel marine salmon salmonid_(fish) scombrid scombriform scorpaeniform sculpin snapper tuna wolffish 1:1 biological_illustration hi_res technical_illustration zoological_illustration
ambiguous_gender backsack balls feral genitals group hooves male plant quadruped striped_body stripes tail text young young_feral hugh_craig public_domain asinus donkey equid equine mammal plains_zebra quagga recently_extinct_species zebra 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender backsack balls feral genitals group hooves male plant quadruped striped_body stripes tail text young young_feral hugh_craig public_domain asinus donkey equid equine mammal plains_zebra quagga recently_extinct_species zebra 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender baleen dorsal_fin feral fin group partially_submerged tail tail_fin text water hugh_craig public_domain avian baleen_whale bird cetacean dolphin mammal marine porpoise right_whale toothed_whale whale 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender baleen dorsal_fin feral fin group partially_submerged tail tail_fin text water hugh_craig public_domain avian baleen_whale bird cetacean dolphin mammal marine porpoise right_whale toothed_whale whale 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender fangs feral fur group ice open_mouth plant teeth text trio whiskers hugh_craig public_domain mammal marine pinniped sea_bear sea_elephant sea_lion 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender fangs feral fur group ice open_mouth plant teeth text trio whiskers hugh_craig public_domain mammal marine pinniped sea_bear sea_elephant sea_lion 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender black_body black_fur brown_body brown_fur claws feral fur group paws plant quadruped tail text tongue tongue_out trio hugh_craig public_domain bear black_bear brown_bear grizzly_bear mammal ursine 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender black_body black_fur brown_body brown_fur claws feral fur group paws plant quadruped tail text tongue tongue_out trio hugh_craig public_domain bear black_bear brown_bear grizzly_bear mammal ursine 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender blood bodily_fluids claws fangs feral fur gore open_mouth predator/prey teeth text wet wet_body wet_fur white_body white_fur hugh_craig public_domain bear mammal marine pinniped polar_bear seal ursine 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender blood bodily_fluids claws fangs feral fur gore open_mouth predator/prey teeth text wet wet_body wet_fur white_body white_fur hugh_craig public_domain bear mammal marine pinniped polar_bear seal ursine 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws feral fur group paws plant quadruped raised_tail tail text hugh_craig public_domain ailurid coati kinkajou mammal procyonid raccoon red_panda 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws feral fur group paws plant quadruped raised_tail tail text hugh_craig public_domain ailurid coati kinkajou mammal procyonid raccoon red_panda 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws fangs feral fin fur group plant quadruped tail tail_fin teeth text water whiskers hugh_craig public_domain badger fish gulonine mammal marine mustelid musteline otter sea_otter wolverine 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws fangs feral fin fur group plant quadruped tail tail_fin teeth text water whiskers hugh_craig public_domain badger fish gulonine mammal marine mustelid musteline otter sea_otter wolverine 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender animal_genitalia collar feral floppy_ears fur genitals group male paws plant quadruped sheath size_difference tail text hugh_craig public_domain bird_dog bulldog canid canine canis domestic_dog herding_dog hunting_dog mammal mastiff molosser pastoral_dog pug retriever small_molosser terrier toy_dog 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender animal_genitalia collar feral floppy_ears fur genitals group male paws plant quadruped sheath size_difference tail text hugh_craig public_domain bird_dog bulldog canid canine canis domestic_dog herding_dog hunting_dog mammal mastiff molosser pastoral_dog pug retriever small_molosser terrier toy_dog 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral floppy_ears fur group paws quadruped size_difference tail text tongue tongue_out hugh_craig public_domain bird_dog bloodhound canid canine canis cavalier_king_charles_spaniel cocker_spaniel domestic_dog hunting_dog mammal molosser mountain_dog saint_bernard scent_hound spaniel toy_dog 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral floppy_ears fur group paws quadruped size_difference tail text tongue tongue_out hugh_craig public_domain bird_dog bloodhound canid canine canis cavalier_king_charles_spaniel cocker_spaniel domestic_dog hunting_dog mammal molosser mountain_dog saint_bernard scent_hound spaniel toy_dog 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral floppy_ears fur group paws quadruped tail text tongue tongue_out hugh_craig public_domain canid canine canis dhole dingo domestic_dog greyhound hunting_dog mammal molosser mountain_dog newfoundland_dog sighthound 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral floppy_ears fur group paws quadruped tail text tongue tongue_out hugh_craig public_domain canid canine canis dhole dingo domestic_dog greyhound hunting_dog mammal molosser mountain_dog newfoundland_dog sighthound 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender countershade_fur countershade_torso countershading feral fur group paws plant quadruped tail text whiskers young young_feral hugh_craig public_domain afrosoricid arctic_fox canid canine fox mammal red_fox silver_fox tenrec true_fox 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender countershade_fur countershade_torso countershading feral fur group paws plant quadruped tail text whiskers young young_feral hugh_craig public_domain afrosoricid arctic_fox canid canine fox mammal red_fox silver_fox tenrec true_fox 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender brown_body brown_fur countershade_fur countershade_torso countershading feral fur group open_mouth plant quadruped tail text hugh_craig public_domain domestic_ferret gulonine lagomorph mammal marten mephitid mustelid musteline pine_marten polecat_(mustelid) skunk stoat true_musteline weasel 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender brown_body brown_fur countershade_fur countershade_torso countershading feral fur group open_mouth plant quadruped tail text hugh_craig public_domain domestic_ferret gulonine lagomorph mammal marten mephitid mustelid musteline pine_marten polecat_(mustelid) skunk stoat true_musteline weasel 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender fangs feral fur group open_mouth paws plant quadruped tail teeth text tongue tongue_out white_body white_fur hugh_craig public_domain canid canine canis coyote jackal mammal wolf 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender fangs feral fur group open_mouth paws plant quadruped tail teeth text tongue tongue_out white_body white_fur hugh_craig public_domain canid canine canis coyote jackal mammal wolf 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender brown_body brown_fur countershade_fur countershade_tail countershade_torso countershading feral fur group plant quadruped striped_body striped_fur stripes tail text hugh_craig public_domain civet genet mammal viverrid 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender brown_body brown_fur countershade_fur countershade_tail countershade_torso countershading feral fur group plant quadruped striped_body striped_fur stripes tail text hugh_craig public_domain civet genet mammal viverrid 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral fur group paws plant quadruped tail text whiskers young young_feral hugh_craig public_domain domestic_cat felid feline felis mammal wildcat 1897 19th_century absurd_res ancient_art biological_illustration english_text hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral fur group paws plant quadruped tail text whiskers young young_feral hugh_craig public_domain domestic_cat felid feline felis mammal wildcat 1897 19th_century absurd_res ancient_art biological_illustration english_text hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral fur group markings paws plant quadruped spots spotted_body spotted_fur tail text hugh_craig public_domain cheetah felid feline leopard mammal pantherine snow_leopard 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral fur group markings paws plant quadruped spots spotted_body spotted_fur tail text hugh_craig public_domain cheetah felid feline leopard mammal pantherine snow_leopard 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
fangs feral fur male paws plant quadruped solo striped_body striped_fur stripes tail teeth text hugh_craig public_domain felid mammal pantherine tiger 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
fangs feral fur male paws plant quadruped solo striped_body striped_fur stripes tail teeth text hugh_craig public_domain felid mammal pantherine tiger 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
feral fur group male mane paws plant quadruped tail tail_tuft text trio tuft whiskers hugh_craig public_domain felid lion mammal pantherine 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
feral fur group male mane paws plant quadruped tail tail_tuft text trio tuft whiskers hugh_craig public_domain felid lion mammal pantherine 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral flower fur group membrane_(anatomy) patagium plant quadruped tail text young hugh_craig public_domain afrosoricid colugo eulipotyphlan hedgehog mammal mole_(animal) pen-tailed_treeshrew potamogale sengi shrew star-nosed_mole tenrec 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral flower fur group membrane_(anatomy) patagium plant quadruped tail text young hugh_craig public_domain afrosoricid colugo eulipotyphlan hedgehog mammal mole_(animal) pen-tailed_treeshrew potamogale sengi shrew star-nosed_mole tenrec 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral flower group membrane_(anatomy) membranous_wings plant text wings hugh_craig public_domain bat leaf-nosed_bat mammal microbat rhinolophid vampire_bat yangochiropteran 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral flower group membrane_(anatomy) membranous_wings plant text wings hugh_craig public_domain bat leaf-nosed_bat mammal microbat rhinolophid vampire_bat yangochiropteran 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
5_fingers ambiguous_gender claws feral fingers fur group plant tail text hugh_craig public_domain atelid aye-aye callitrichid cebid haplorhine howler_monkey lemur loris lorisoid mammal marmoset monkey new_world_monkey primate slow_loris squirrel_monkey strepsirrhine tarsier 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
5_fingers ambiguous_gender claws feral fingers fur group plant tail text hugh_craig public_domain atelid aye-aye callitrichid cebid haplorhine howler_monkey lemur loris lorisoid mammal marmoset monkey new_world_monkey primate slow_loris squirrel_monkey strepsirrhine tarsier 1897 19th_century absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
5_fingers 5_toes ambiguous_gender feet feral fingers fur group plant tail text toes hugh_craig public_domain arthropod atelid baboon butterfly haplorhine insect lepidopteran mammal monkey new_world_monkey old_world_monkey primate proboscis_monkey spider_monkey 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
5_fingers 5_toes ambiguous_gender feet feral fingers fur group plant tail text toes hugh_craig public_domain arthropod atelid baboon butterfly haplorhine insect lepidopteran mammal monkey new_world_monkey old_world_monkey primate proboscis_monkey spider_monkey 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
5_fingers 5_toes ambiguous_gender feet feral fingers fur group plant text toes hugh_craig public_domain ape chimpanzee gibbon gorilla haplorhine mammal orangutan pan_(genus) primate 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
5_fingers 5_toes ambiguous_gender feet feral fingers fur group plant text toes hugh_craig public_domain ape chimpanzee gibbon gorilla haplorhine mammal orangutan pan_(genus) primate 1897 19th_century ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender beak biped egg feathered_wings feathers feral flying green_body green_feathers group open_mouth plant wings ernst_haeckel public_domain apodiform avian bird hummingbird absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender beak biped egg feathered_wings feathers feral flying green_body green_feathers group open_mouth plant wings ernst_haeckel public_domain apodiform avian bird hummingbird absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws feral group open_mouth quadruped shell tail ernst_haeckel public_domain galápagos_tortoise leatherback_sea_turtle reptile scalie sea_turtle snapping_turtle tortoise turtle absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws feral group open_mouth quadruped shell tail ernst_haeckel public_domain galápagos_tortoise leatherback_sea_turtle reptile scalie sea_turtle snapping_turtle tortoise turtle absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws feral group open_mouth quadruped scales tail tongue tongue_out ernst_haeckel public_domain agamid chameleon lizard reptile scalie thorny_devil absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender claws feral group open_mouth quadruped scales tail tongue tongue_out ernst_haeckel public_domain agamid chameleon lizard reptile scalie thorny_devil absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral group membrane_(anatomy) plant quadruped young young_ambiguous young_feral ernst_haeckel public_domain amphibian frog tadpole absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration female_(lore) mother_(lore) mother_and_child_(lore) parent_(lore) parent_and_child_(lore)
ambiguous_gender feral group membrane_(anatomy) plant quadruped young young_ambiguous young_feral ernst_haeckel public_domain amphibian frog tadpole absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration female_(lore) mother_(lore) mother_and_child_(lore) parent_(lore) parent_and_child_(lore)
ambiguous_gender antennae_(anatomy) feral group insect_wings lepidopteran_wings wings ernst_haeckel public_domain arthropod insect lepidopteran moth plume_moth absurd_res ancient_art biological_illustration hi_res monochrome technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender antennae_(anatomy) feral group insect_wings lepidopteran_wings wings ernst_haeckel public_domain arthropod insect lepidopteran moth plume_moth absurd_res ancient_art biological_illustration hi_res monochrome technical_illustration traditional_media_(artwork) zoological_illustration
4_eyes ambiguous_gender antennae_(anatomy) black_background claws compound_eyes exoskeleton feral glistening glistening_body group lying multi_eye multi_leg multi_limb nude on_back on_front pincers side_view simple_background tail ernst_haeckel public_domain arachnid arthropod horseshoe_crab marine prehistoric_species sea_scorpion trilobite absurd_res ancient_art biological_illustration hi_res monochrome technical_illustration traditional_media_(artwork) zoological_illustration
4_eyes ambiguous_gender antennae_(anatomy) black_background claws compound_eyes exoskeleton feral glistening glistening_body group lying multi_eye multi_leg multi_limb nude on_back on_front pincers side_view simple_background tail ernst_haeckel public_domain arachnid arthropod horseshoe_crab marine prehistoric_species sea_scorpion trilobite absurd_res ancient_art biological_illustration hi_res monochrome technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral group ernst_haeckel public_domain acarine arachnid arthropod mite spider vinegaroon absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral group ernst_haeckel public_domain acarine arachnid arthropod mite spider vinegaroon absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral group ernst_haeckel public_domain aquatic_gastropod gastropod marine mollusk nudibranch sea_slug slug absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration
ambiguous_gender feral group ernst_haeckel public_domain aquatic_gastropod gastropod marine mollusk nudibranch sea_slug slug absurd_res ancient_art biological_illustration hi_res technical_illustration traditional_media_(artwork) zoological_illustration