Swift sailfish are a type of fishing spot found just north of the entrance to the Deep Sea Fishing Hub. They do not require any bait, and require 97 Fishing to catch. They are different to regular sailfish fishing spots because they will last a shorter amount of time before moving, but have a higher catch rate. They also have a base increase of experience from normal sailfish at 400, to 420 at a swift spot.
One swift sailfish spot is always present, whereas there are two regular spots.