I have a question

my dog is about 2years old. he is an american mini eskimo.(Pauli) Has any one experienced them likeing to play in water and then do a dance, turning in circles and then going back and splashing their paws again?
Other question: he loves to dig holes in the yard. Our yard looks like a war zone where landminds had gone off.

Does any one have any suggestions or why they do this? Is this is normal?