On the blown up photo in the link that dorsal thing I thought was algae looks a lot like the dorsal of a black tip.
I'm glad I paddled out with my GoPro! I managed to snap this photo a few sessions ago - I can't tell if this is a shark or a dolphin. Can I get some photo analysis?
Frisco is famous for sharks. Avon is where the Russians got mauled. The guy actually swam his girl to the beach...where he died having not a drop of blood left in his body! Pure adreneline got him in. His girl survived, barely. Everyone who surfs often and actually lives here sees them regularly. Hell, the New Inlet that every donkey and kook touron crowd now daily is among the worst! Just a couple days ago they pulled a 10 foot croc swimming out! ha...just one more thing to look for. We think he smelled all the Donkey meat and wanted a taste! Chew on that....