Thanks. I found photos online that indicate that's what they are. Not a lot of care info so I'll treat them like regular mushrooms. I found another on that rock = 7 for $15. The store got them in 3 days ago and right now they open 1 inch +.
This is what I found on them..
Care Level: Easy
Temperament: Semi-aggressive
Lighting: Moderate
Waterflow: Medium
Placement: Bottom to Middle
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025
Color Form: Green, Purple, Tan
Supplements: Strontium, Iodine, Trace Elements
Origin: Indo-Pacific
Family: Discosomatidae