Check out ps3stevo's thread (if it's still on here) as he setup a UK coldwater marine setup full of anemones/beadlets/blennies and shrimp.
It looked ace IMO!
I found it, here it is.
http
/www.fishforums.net/index.php?/topic/356704-cold-marine-aquarium/page__p__2971249__fromsearch__1#entry2971249
CW systems are ace. I've seen a lot of them growing up in the West coast of the US and having friends from that area. You buy chillers and the glass in the tank has to be thicker for insulation purposes. Many also opt to by lobster and crab tanks from the local supermarket on craigslist. I know a lot people from Oregon and California that then go out once the tank is setup and do locat collections.
Liz