UPDATE (6/12/2018): SeaWorld has responded to this article by saying that Katina's dorsal fin has "continued to heal as expected."
"As reported in March of this year, her behavior returned to normal almost immediately following the injury," a spokesperson for SeaWorld told The Dodo. "Since then, she is not showing any signs of discomfort and has been engaging with guests and the other orcas in her pod, as well as the care and veterinary staff as they continue to treat her."
The spokesperson also said that Malia's skin condition was "nothing concerning."
"Simply put, the superficial layers of her skin are shedding more slowly, resulting in the color change," the SeaWorld spokesperson said. "Her team of animal care and veterinary teams are monitoring the color change as it is an opportunity to learn more about the progression of skin changes in managed and free-ranging killer whales."