OK, so I understand what sharklets are. What I don't get is why it so frequently appears on website booking interfaces like below. Is anyone really going "Well this flight has sharklets so I'm definitely booking that one"? I book by price, flight timings and cabin comfort, as I'm sure most people do.
Then consider that there's the likely majority of passengers that have no clue what sharklets are. It seems to be saying that there are somehow juvenile apex predator fish on the plane (Baby Sharks on a Plane - the Samuel L Jackson sequel nobody asked for).
I applaud the use of anything that saves fuel but putting it up as a single word on the booking page with no explanation is just weird.