If I visit for last admission, how long will I have in the attraction? Last admission is 1 hour before closing - therefore you would only have 1 hour to explore our attraction. Related articles How long does it take to go around SEA LIFE Manchester? Do you currently offer Sleepover packages? What is a Standard Entry ticket and what's included? When is SEA LIFE Manchester open? When is the quietest time to visit SEA LIFE Manchester?