Figure 1.
Spontaneous ejaculation by a wild Indo-Pacific bottlenose dolphin off Mikura Island, Japan.
(A) Dense seminal fluid was ejaculated from the tip of the penis with initial contraction of the peduncle muscle downward. (B) A few seconds after the first ejaculation of seminal fluid, the remaining seminal fluid was ejaculated for 0.86 s (26 frames at (1/30 s)/frame).