Swimming with dolphins was a totally/very/ completely unusual experience. I was a little / absolutely / bit worried about it at first, but also 'extreme / totally / pretty excited and when I got into the sea with them and they swam up to me, I cannot explain how very / absolutely / extremely wonderful it was. I thought the sea was slightly / awfully/absolutely freezing when I got in, but I soon got used to it. The dolphins were "dreadfully / really a bit fascinating to watch as they twisted and turned around me, and one even came up and nudged me with his nose. I swam with them for ages and felt completely / awfully / very exhausted, yet delighted by the totally/pretty/terribly unique experience when I got back into the boat.