What's green, hairy and lives on the beach?

Day 3 of Cornwall - Went to St Ives for a wander round the shops and had my first ever Cornish Pasty... It's safe to say I won't be having another one. Along with many boats, a seal and dogs jumping about in the sand, I found a very hairy chain. It was also green. Lovely stuff.

Here are some more photos from today.