Sea pens are colonial marine cnidarians belonging to the order Pennatulacea. There are 14 families within the order; 35 extant genera, and it is estimated that of 450 described species, around 200 are valid.
... Instead of releasing Lolita back into the Salish Sea to live in the wild, Mr Colby said the orca will likely live out her remaining days in a Sea Pen that will allow her to feel her home waters and reconnect acoustically with the pod she was separated from decades ago...