Late Wednesday night at 11:35 p.m. ET, a tweet popped up from an account called BannedOffline. The tweet, which was quickly deleted, announced that "All Seaworld Sites" were offline.
A quick check of major SeaWorld websites (seaworld.com, seaworldparks.com, and seaworldparks.com/en/seaworld-orlando/) showed that they were down. By 11:48 p.m., the Orlando site was back, but an hour later all three were again offline.
Shortly after claiming responsibility for SeaWorld, the same Twitter account seemed to say they were involved in the attack on Leslie Jones' website earlier in the day, where personal identification, naked photos, and a video of the gorilla Harambe were posted on the site. They retweeted one tweet implying responsibility from the account "New World Hackers," and directly tweeted another.
Earlier this summer, a British teenager admitted hacking into SeaWorld's websites in 2014 and 2015. He was sentenced to courses, fines, and having his computer taken away, but did not serve any jail time.