Porpoises/dolphins?

I've no idea which, but it was lovely to see a small pod (about 6 including a young one staying very close to Mum!) swimming past as Mr H and I were walking Tinker.
I know the photo isn't great, but this is the first time I've seen dolphins in the wild since we moved here.

It's the last day of term today and we've had tears as K's Head Teacher is retiring. K has only known her for a few months but even in that short space of time Mrs J has been such a positive influence on K.