It sounds like one of Mrs Pauls
A sober observation:
I was on a charter boat off San Pedro fishing for chocolate fish, ling cod, etc. and some SOB standing right next to me hauls in a small shark!
Flopping around, snapping its teeth, trying to bite ...
So if it has rows of sharp teeth, eyes like black buttons and acts like it wants to bite you, it may be a shark.
You would be smart sticking to frozen fish sticks. NO charge.