One of the problems male Primarina have is getting mistaken for female due to their feminine appearance. Such is the case here with Pokemon trainer Bennet's Primarina, when someone doesn't believe it when he says his gender and has to show it directly. Bennet's Primarina has shorter hair and fewer eyelashes, though he still looks very feminine.
I'm not sure what a sea lion's penis looks like, nor if I got it in the right position. I wish I could have found a reliable reference for it.