FURVERT!

1:1 altairxxx animal_genitalia animal_penis anthro aquatic barrel bdsm bondage bottlenose_dolphin bound cetacean cetacean_genitalia cetacean_penis collar container detailed_background dolphin erection gas_mask genital_slit genitals gimp_mask hands_behind_back hands_tied harness harness_ring hi_res legs_tied long_penis male mammal mask metal metal_barrel metal_container o-ring oceanic_dolphin penis rebreather_bag ring_(hardware)solo submissive submissive_male suspension tail tail_bondage tail_tied tapering_penis toothed_whale toxic_waste toxic_waste_barrel trun underwater water