Tortle

Traits
Ability Score Increase: +2 Str & +1 Wis

Size: Medium / Speed: 30

Languages: common, aquan

Features
Survival Instinct: you have proficiency in survival

Claws: your unarmed strikes deal 1d4+STRmod slashing

Hold Breath: you can hold your breath for up to 1 hour at a time

Natural Armor: you can't wear armor, your natural AC is 17 and gains no bonus from dexterity, shields still apply as normal

Shell defense: as an action you can retreat into your shell, while in your shell you gain +4 AC, are prone, have advantage on str and con saves, have 0 speed, have disadvantage on dex saves, can't take actions or reactions, and can leave your shell as a bonus action