A small group of grey seals loiter in the harbour waiting to be fed. If you aim right (unlike in this picture!) you can get them to haul out onto a makeshift pontoon to grab your fish, giving fabulous views without having to go through the embarassment of throwing up on the boat trip out to the nearby Farne Islands.
It's a great opportunity to study the animals close up in comfort. The nostrils are fascinating I find. If you spend 80% of your time under the surface, a watertight nasal orifice is pretty important. The normal relaxed position is closed and water pressure during the dive presses them even more firmly shut and when the seal surfaces, muscles have to contract to open them up.
Their adaptions for diving are intriguing too. Although the typical routine is dive for 5 to 8 minutes, surface for a minute and repeat ad infinitum, when pushed or threatened they have been recorded staying under for 30 minutes. How? Well I read that they actually expel air from the lungs before diving. Oxygen is stored instead in the blood and in the muscle.
Avoids the bends too I suppose.