This walkthrough will show you how to beat the Giant Whale-Dragonfly without getting hit in Sly 3: Honor Among Thieves (2024) on PS5 and PS4.
Use the following video as a reference:
When you get close, make sure you attack the seekers first. Hold down L1 and when wait until the reticle blink to lock on before you release. Once you clear out the seekers, you can shoot your turret at the monkey.
When he sends out green barriers, do your best to stay in the safe area and boost forward when it is safe to do so. You can then shoot the turret at the monkey if you see an opening.
Repeat these steps to beat the Whale-Fly without taking damage.