WILD KINGDOM: “It’s not every night you get to dine under a huge whale,” said Stephen I. Sadove, chairman and chief executive officer of Saks Inc., the sponsor of Thursday night’s fund-raiser at the American Museum of Natural History. Guests had cocktails in the rotunda before shifting to the Hall of Ocean Life for dinner and finally to the Hall of African Mammals for dancing and more drinks. The women, festively dressed in the spirit of spring, fit the event’s “Bright Young Things” theme celebrating the special exhibit of bioluminescent creatures opening later this month. “I’m seeing a lot of bold colors, prints and dresses that we haven’t seen in a long time,” said shoe designer Vanessa Noel, wearing a Victor Edelstein poufy silk cape in fuchsia. “The men seem somber,” added Noel, as she further scoped the crowd of 600, which raised $350,000 for the museum.