Common seal off Brighton

A common seal was spotted today off Brighton at 7.15 pm today by Malin who was running along the undercliff walk between Rottingdean and Brighton Marina. Malin  and I spotted a seal in the sea. The seal was swimming towards the shore but then it dived down in the direction of Rottingdean. It was not seen again, however seals can dive for 15- 20 minutes easily so it is easy to loose track of them once they dive.