Due to the Anuris slippery skin foes have difficulty holding onto them. The Anuri gets to roll advantage against being grappled and Also when attempting to escape a grapple.

The Anuri can breathe both air and water

The anuri must spend at least 1 hour fully submerged in water every 48 hours. every 48 hours they fail to do this they take 1 point of exhaustion that can only be removed by spending at least 1 hour fully submerged. 

Take half Damage on Cold Damage

When dropped to below 0 hp from cold damage the anuris body freezes solid and the following effects take place: the anuri is unconscious, stabilized at 1 hp, movement 0, AC increases to 18 if normal AC is below 18. The condition lasts until the body is thawed, this time length varies depending on strength of heat source. Room temperature: 8 hours. Mild heat (such as one torch):4 hours, Medium heat (such as 4-6 torches or a campfire): 2 hours, High heat source (such as high sun in the desert or a bonfire): 30 minutes. The anuri can be healed by magic while in hibernation however they remain frozen. If left in an area below freezing temperature the Anuri can remain in hibernation indefinitly. If the anuri drops below 0 hp while in hibernation they begin rolling deathsaves until they die or are stabilized. 

Add +2 to your Dexterity score and +1 to your Constitution Score 

You can read and write both Common and Aquan 

Between long rests you may cast the spell jump on yourself only up to 3 times.