Answer:
I am the signature stroll of ducks and penguins
I go in dry and come out wet. The longer I stay in the stronger my surroundings get.
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
I can wake you up in the morning but I require no electricity or winding.
I go inside boots and outside shoes. What am I?
I am your mother's brother's only brother in law. Who am I?