1:1 2016 almost_fully_inside ambiguous_gender ambiguous_pred ambiguous_prey bubble cetacean dolorcin dolphin duo eyes_closed feral feral_pred feral_prey flukes gaping_mouth head_first hi_res huge_belly larger_ambiguous larger_pred mammal marine mouth_shot open_mouth oral_vore signature size_difference smaller_ambiguous smaller_prey soft_vore toothed_whale underwater vore water year