Argonian is one out of the ten playable races in the Elder Scrolls Online. You can find a full list of all the races here.

The racial skills of the Argonians reflect their people's perilous swamp environment; giving them bonuses to healing done, restoration staves, disease resistance, resources gained from consuming potions, swimming speed, as well as base health and magicka.

Below you can see the racial passives that you benefit from when you select Argonian as your race.