Visibility is poor in the murky darkness of the Crashed Frigate, so tracking these sinister submariners is easier with the Thermal Visor (although not necessary), especially in the large chamber near the beginning of the level. Use standard dodging techniques (circle them using side dashes), making use of cover to allow time for your beams and missiles to charge. Aqua Pirates will attack with multi-missiles, so use cover or rapid dashing to avoid the torpedoes. Like the Flying Pirates, they will perform a kamikaze attack once they are lethally damaged or their jetpacks malfunction, but you can prevent this by hitting them with the Wave Beam.
