You were just diving around underwater at the depths of the ocean/sea, exploring around until...

A shark sees you, it just looks at you with curiousity, it didn't look like it was a threat or meaning any harm its just.. looking at you..

You then calmed down knowing it didn't look like a threat or meant any harm, you then slowly decided to pat its head slowly

The Lemon Shark then snapped out of it's curious state and immediately went leaning to your touch, circling around you, it looks like it was very happy about it