FURVERT!

2_penises animal_genitalia animal_penis anthro aquatic big_tail cdi cetacean dolphin erection fish genitals hemipenes hybrid male mammal meruka multi_genitalia multi_penis navel navel_fetish navel_penetration oceanic_dolphin penetration penis shark solo tail tapering_penis tentacle_in_navel tentacle_penetration tentacles toothed_whale