Normally, barring an unwanted pregnancy, a randy teen boy's worst fear is that girlfriend or her dad will yell at him or that his girlfriend will dump him.

When said GF is a leopard seal, he may end up getting dumped an entirely different sense, by her or her dad. Not that it really matters - from the perspective of someone being digested, one intestinal tract looks much like another.

(The dolphin is Salome, Natiq's first other-species lover and the one who convinced him that the best way to guarantee a steady supply of nookie is to be somewhat trustworthy. His daughter Calliope there may or may not have learned that lesson yet.)