It's not Aiptasia... 100% certain.
Tough to tell from those pictures... but I'm leaning toward baby plate corals. If you disturb it (blow water on it, touch it, etc) it should retract or deflate. If it's a plate or any type of coral, it will more than likely deflate and you can feel a hard skeleton underneath. If it's a Majano (which it could be), it should retract back to a little ball... nothing hard underneath.
And of course... use rubber gloves if you decide to poke at it since it's all cozy in a field of zoanthids!
Tough to tell from those pictures... but I'm leaning toward baby plate corals. If you disturb it (blow water on it, touch it, etc) it should retract or deflate. If it's a plate or any type of coral, it will more than likely deflate and you can feel a hard skeleton underneath. If it's a Majano (which it could be), it should retract back to a little ball... nothing hard underneath.
And of course... use rubber gloves if you decide to poke at it since it's all cozy in a field of zoanthids!

