The"hairy mushroom" pic 2, that one i got with the tank, it was the onl living thing left... some guy had had a nice 75 gallong setup, and then let it go to hell... then we sold it online to us... The rock was dead, no coraline algea to speak of... and on one rock was this pink blob. after reestablishing the tank, after moving it 150 miles... it came back to life... and split its self... then they stopped growing... until we change the lighting system, and added caclium and trace elements. now both are huge and splitting again.
Pic 1... that is a pet stores fault. I paid a whopping 2.49 for the rock it was on. I knew it was a coral, but dared not ask, cause then they'd want me to pay for the coral they didn't know was there.
Pic 3... i got that off another petsore for lke $35 with 7 heads on it... they didn't know what it was really... and seemed to refer to it as a "fuzzy mushroom" and i honestly have no idea if it is a fuzzy or if it is a ricordia...
but those are all the corals that i have.