This season, all battle pass owners can access Aquaman's Weekly Challenges to unlock the DC superhero skin. The fourth challenge in the series is arguably the most complex of all. It's a swimming time trial at Dirty Docks, which is submerged at the time of writing.
Start of the timed challenge
The race itself is not tricky: it's a large circle, delimited by gates/timers.
To complete the challenge, head east and collect all the holographic stopwatches. To be on time, you'll need the dolphin swimming technique, which consists of diving and then jumping out of the water, repeating this movement.
Note that to complete a timer/step, your avatar's body doesn't need to come in contact with the beacon. No matter if you're underwater or in the air when you pass the beacon, the step will still be counted.
Also, you just have to swim with the technique, focusing on the direction, to complete the challenge without any trouble.
Original content by Romain "Zorg" Becquelin.