Biodiversity in Canada

[WarDog]

Perhaps I don't understand your original inquiry.

Originally Posted by ataller

Our tanks are lacking worms, feather dusters, star fish, pods, serpents, sponges, tunicates, macro algae’s, snails, barnacles and so many other cryptic organisms that I think really make the best of the best tanks.

Not sure about your area, but all of these are available at my LFS.