Another look at the new Deep Ocean Bay exhibit:
Also I think guests have been able to sometimes enter Dolphin Theatre to see the dolphins but still no shows yet:
Sources: http://xhslink.com/bhz8Pm and http://xhslink.com/aWB8Pm and http://xhslink.com/ShC8Pm and https://m.weibo.cn/status/4860851519228381