Sup'ing our town reef late yesterday arvo - just before dusk...some baitfish started bubbling close by - not worried

...shortly after, saw what looked like a small thresher tail splash about 20m from me - still not 'overly' concerned

...about 5mins later noticed a large fin & dark shape swimming a bit further out...

, it may have been a dolphin, but...
we suddenly decided that we'd had enough fun & started the paddle in, not because we were scared of a shark...just because we wanted to - OK!?!