Grey Seal Bull

Grey Seals are one out of two seal subspecies, which are native to the UK. They usually have a grey fur coat. However, the coat turns into brown in the process of being shed (seals change into a new fur coat once a year).
This bull looks like he is having a good time, and in a way he is. I have seen bulls rolling around and stretching out like this often after they have chased a competitor successfully away from the female(s), he is waiting to mate.