Otterfolk

Ability Score Increase. Choose one ability score to improve by 2 and another to improve by 1.
Age. The maturity level of the Otterfolk is quite speedy and they mature around the age of 5 or 6. However, Otterfolk tend not to live more than a century.
Alignment. Otterfolk are naturally good, doing what's best for their community, family, and friends. They also tend to be fairly chaotic, loving to play tricks and pranks on others.
Size. Otterfolk are between 3 and 4 feet tall and weigh between 40 and 80 pounds. Your size is Small.
Speed. Your base walking speed is 30 feet. Additionally, you have a swim speed equal to your base walking speed.
Darkvision. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.
Creature of the Water. You are well equipped to survive in watery terrains. You can hold your breath for up to 10 minutes at a time. While in the water, you gain tremorsense out to 30 feet--but only for creatures moving through the water.
Claws. Your claws are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage equal to 1d4 + your Strength modifier, instead of the bludgeoning damage for an unarmed strike.
Innate Voyager. You gain proficiency in the Survival skill.
Languages. You can speak, read, and write Mammalian and Otteren, a secret language evolved from the series of squeaks, squeals, clicks, and other noises that ancestral Otterfolk would make.
Part of the Family. You are able to lend a hand to your friends as if they were your own family. You can use the Help action as a bonus action.
Hard to Pin Down. Creatures have disadvantage when making a grappling check against you. Additionally, you can ignore non-magical difficult terrain.