Port Jackson Shark

This shark gets caught in a net by accident. Somehow. And you, the kind person, free him. Somehow, you became friends with him. He doesn't have a name, of course. He calmly came to you for hugs, asking you to pet him...
...
So much time had passed that he had to mate with a female and found a mate. Some time later, when you were back in the water, this shark leaned towards you, as if trying to call you somewhere. The happy father led you and showed you where his eggs were hiding, deciding to raise them himself.