The best tool to get ricordia off rocks is a gasket scraper tool (like a thin chisel). Use it to pop off as little rock as possible underneath the holdfast. If the ricordea tears, it will usually heal itself in a few days.
There is currently legislation to make it illegal to have more than 1/4" of rock around the holdfast, but as of now, it is a grey area.
The best place to get ricordea is on the inshore patch reefs. They seem more abundant where the water gets slightly more turbid believe it or not. You can find lots of drab green ricordea on the in-shore gorgonian/macroalgae patches, which is where we get most of the other corallimorphs, but the ricordea is always a drab green in here. Sometimes you come across these ricordea that are like 4" in diameter which look really cool even if they aren't that colorful. They look like anemones.
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