That is completely normal.
During the molding process there is plastic that drips off a vent - as the mold turns and the plastic melts - the vent drips plastic and it makes a spot like you see here. If they are really high the assembly guys will actually grind them down with a sander. However, = if they are just a little raised they leave them alone. (as your looks to have been) All our kayaks have this look near one of the hatches - depending on which model and where that vent is located in the given mold.
Thank You for quick reply