Answer:
I live in the ocean but I am not a fish. I have eight arms and can change colors quickly. What am I?
Who is it that rows quickly with four oars but never comes out under his own roof?
What lives where it cannot breathe and has a hole in its back
I grunt and have a curly tail. People say I'm dirty but I'm actually very clean. What am I?
I have a powerful bite and live in rivers and swamps. People are often afraid of my big jaws. What am I?
I hold two meanings. With one I may be broken, with the other I hold on. What am I?