Your base movement speed is 30 feet and your base swimming speed is 15 feet.

You can breathe in air and underwater.

You can use an action to exhale hot steam in a 15 ft. cone originating from you. When you use your breath weapon, each creature in the area of the exhalation must make a Dexterity saving throw. The DC for this saving throw equals 8 + your Constitution modifier + your proficiency bonus. A creature takes 2d6 fire damage on a failed save, and half as much damage on a successful one. The damage increases to 3d6 at 6th level, 4d6 at 11th level, and 5d6 at 16th level. After you use your breath weapon, you can’t use it again until you complete a short or long rest.

You have resistance to fire damage.

You have resistance to fire damage. Also, your AC is equal to 17 when you are not wearing armor. You benefit from shields as normal though.