It’s a dolphin…right?

Retired teacher Jeff Buchan apparently taught maths, but may have wished it was marine biology so that he could correctly identify the unknown fin spotted near his ski on Botany Bay the other night.

What’s that in the lower left corner Jeff?

 

This is probably what it looked like through Jeff’s dilated eyes…

 

We’ve done our research and the experts have determined that it was “probably a dolphin” based on the following useful chart.