Help I.D. Please

[Dfrashid]

These are growing and a friends tank, and I’m just curious what they are and if they’re any good or not

 

[Srt4eric]

These are growing and a friends tank, and I’m just curious what they are and if they’re any good or notView attachment 50765View attachment 50766View attachment 50767

limpets. good

 

[Coral reefer]

Good as long as not stuck under a cleaning magnet or in a pump

 

[BAYMAC]

Good as long as not stuck under a cleaning magnet or in a pump

on get sucked into an intake, like on a RIO900 back in the day