Tidal Gardens - Rare & Exotic Corals for Sale If you are looking for corals for sale online you’ve found the right place. Here at Tidal Gardens we try to track down the most beautiful corals we can find and propagate them for reef aquarium hobbyists around the country. In particular, we love the rare and exotic corals that are seldom seen for sale online. We have both stock item corals as well as What You See Is What You Get (WYSIWYG) corals that are marked with the Tidal Gardens WYSIWYG logo. Enjoy!