- Telepathic ability to communicate with marine life, which he can summon from great distances.
- He has the ability to breathe underwater.
- He possesses superhuman durability high enough to remain unaffected by the immense pressure and the cold temperature of the ocean depths, this also makes him tough enough to be invulnerable to machine gun fire.
- He also possesses superhuman strength.
- He can swim at very high speeds, capable of reaching speeds of 10,000 feet per second and can swim up Niagara Falls.
- He can see in near total darkness and has enhanced hearing granting limited sonar.
- Although he can remain underwater indefinitely without suffering any ill effects, Aquaman grows weak if he remains on land for extended periods. However, when Batman invented Aquaman's water suit he was able to walk on land for an indefinite amount of time and was no longer vulnerable to a "dehumidifier".
- Ability to fly can't be explained by either side (Atlanteans are an off-shoot of "baseline" humanity); though, in terms of in-continuity chronology, there were many mutants in existence before Namor.
- Namor possesses a fully amphibious physiology suited for extreme undersea pressures.
- Superhuman strength, speed, agility, durability, flight, and longevity.
- Namor has the ability to survive underwater for indefinite periods, and specially developed vision which gives him the ability to see clearly in the murky depths of the ocean.
- Namor has the ability to swim at superhuman speeds, even by Atlantean standards.
- Namor has greater longevity than a normal human being. He is well over 90 years old as he was born in 1920 in the Marvel timeline, but has the appearance of a male in his prime.
- Namor is able to forcibly expel water from his body to extinguish fires and is the strongest Atlantean ever known. Namor was given possession of the Time Gem. This gem allows the user total control over the past, present, and future. It allows time travel, can age and de-age beings, and can be used as a weapon by trapping enemies or entire worlds in unending loops of time.
I think Namor would win only because he has the ability to fly and because he has the time gem making him have a huge advantage over Aquaman.
Leave your opinion on who would win and why. Who would you like to have in the next hero battle?