Rule 34 Dev - 3_toes 5_fingers abstract_background anthro arm_fins biped black_claws claws countershading digitigrade dorsal_fin elbow_fin featureless_crotch feet fin fingers gills grey_background grey_body grey_countershading grey_nipples grey_skin male muscular muscular_anthro muscular_male nipples notched_fin open_mouth pecs pink_tongue red_eyes shark_tail sharp_teeth simple_background solo standing tail tail_fin teeth toes tongue tongue_out cryptid_jhin fish mackerel_shark marine megalodon prehistoric_species shark 2023 hi_res model_sheet signature|22727818400