Hold Breath. You can hold your breath for up to 15 minutes at a time.

Chameleon Carapace. While you aren't wearing armour, your carapace gives you a base Armour class of 13 + your Dexterity modifier
As an action, you can change the colour of your carapace to match the colour and texture of your surroundings, giving you an advantage on Dexterity (Stealth) checks made to hide in those surroundings.

Dark vision. You can see in dim light within 60 feet of yourself as if it were bright light, and in darkness as if it were dim light. You discern colours in that darkness only as shades of grey

Bite. You have a fanged maw that you can use to make unarmed strikes. When you hit with it, the strike deals 1d6 + your Strength modifier slashing damage, instead of the bludgeoning damage normal for an unarmed strike.

Nature's Intuition. Thanks to your mystical connection to nature, you gain proficiency with two of the following skills of your choice: Animal Handling, Medicine, Nature, Perception, Stealth, or Survival

Adaptive. Generations of living in different types of terrain, has made it possible to survive with only half the water normally required.