SEA LIFE Brighton
Near Brighton Pier, this aquarium is the oldest in the world, with thousands of sea-dwelling creatures—from sharks to seahorses to starfish—in more than 30 marine habitats. There's a glass-bottom-boat experience, a humid rainforest adventure (featuring an eight-foot-long anaconda), and an extraordinary coral reef exhibition that shows how the ecosystem changes between day and night. Check online for the daily feeding schedules, all of which are accompanied by free talks (including sharks at 2 and turtles at 4). Book online at least a day in advance for big discounts on the ticket price.