There are places called Blue, there are people called Blue, there are films called Blue and there are both albums and bands called Blue. Whilst I'm at it there are songs called Blue and there are magazines called Blue and blue is, of course, one of the world's favourite colours. But there isn't blue food. Weird. Anyway, today's picture features the colour blue but that is to signify water as this gentleman has been taking a series of submarine selfies but he's been down there long enough that he's beginning to go blue in the face himself. Perhaps someone should tell him it's not worth it for Instagram likes...