We bought this guy as a bubble coral but it always stays flat and stringy wit knobby bubbles tentacles. All the other bubble corals we have are big and fat bubbles all over. Any ideas if this is actually a bubble coral or something else?
I believe I was incorrect with my ID. It's still a bubble coral but I believe yours is a physogyra lichtensteini. They have a bit of a different look like yours compared to plerogyra sinuosa