Namora is biologically half Atlantean and half human with a mutant X-Gene. With that, she all the natural abilities of both, though due to her hybrid/mutant nature many of her natural abilities are far greater then any average Altantean or human.
Namora's Altantean heritage grants her multiple underwater super attributes. She can Swim at incredible speeds, immune to cold and pressures of deep sea, able to see clearly in water whether murky or not & her strengths and health are naturally replenished in water.
Namora is trained in Atlantean combat methods and is primarily a unarmed combatant. Namora is also also fluent in Atlantean. Lemurian and English languages.