If you ever visit Newquay, Cornwall, England a good place to see wildlife is at Towan Headland. It's a short walk from the town centre and next to Fistral beach which is famous for surfing.
Here's a few photos from a couple of visits of Harbour Porpoise, Common Dolphin, Bottlenose Dolphin, and Common Grey Seal.
From the headland you can some great views, take some regular binoculars, a drink and some snacks and enjoy the day.