As I said earlier I spent a week on the island "Helgoland" to see Gray Seals. It was very interesting to whatch them and to take photos.
It's also funny to see the compositions of the groups because often there are one male, one female and one pub. The male which is usually not the father tries to mate with the female and sometimes even fights with the female to get what he wants. Often the fights are bloody and the big males have scars from several fights... (also with other males).