One calf was born Sunday to 9-year-old mother Whisper, and the other was born Thursday to 22-year-old mother Sikku. Neither has been named yet.
The park says the 5-foot-long, 150-pound calves appear to be in good health. They will nurse for about a year before moving on to a diet of solid fish.
Shows are on hold while the new families bond, but visitors can view the mothers and babies.