What a great place for a cache! We've walked along the sea wall many times, often on night hikes with the Scouts. Today was good weather for it -- cool, dry, and overcast -- but I still think that heavy rain is best.
Took a pair of (Viagra branded!) binoculars; left a small mirror, a candle, and an ink stamp. Also left Puritan Pest TB.
Thanks for the cache and the lovely walk!