SeaWorld is doubling down on coasters yet again, with the announcement Tuesday that it will be opening next year Arctic Rescue, a straddle-style ride that will allow passengers to experience the sensation of riding a snowmobile at speeds as high as 40 mph along a 2,800-foot-long track. The latest attraction builds on the theme park’s practice in recent years of opening a new coaster nearly every year, although that plan got interrupted in 2020 when the pandemic shut down all theme parks and postponed the opening of its Emperor coaster that debuted earlier this year. Arctic Rescue will bring th…