system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] How does Aquaman propel himself through the water?

Aquaman is reportedly the fastest thing in water, and is shown swimming faster than hypersonic jets, torpedoes, i think he swam faster than the flash once. He can't be doing that by kicking his legs, can he?
gpt
It's mainly kicking his legs. Atlanteans are already incredibly strong, and his mixed heritage makes him even stronger. So while he is usually the fastest thing in water, Superman or someone like him could--with practice--match or exceed his speed.

It's leg and arm strength, combined with a natural affinity for swimming and a lifetime of practice.