sentences:  To discourage animals from swimming into the window in the absence of visitors and injuring or killing themselves (as a Pacific bluefin tuna did in 2007), an air hose underneath the window generates a "bubble wall" in front of it throughout the night.In 2011, species reported to be in the exhibit included green sea turtles, sardines, pelagic stingrays, scalloped hammerhead sharks, sandbar sharks, mahi-mahi, mackerel, bluefin and yellowfin tunas, and ocean sunfishes.Historically, the exhibit also included blue sharks, soupfin sharks, and California barracuda.