How do I pre-book my visit to SEA LIFE Manchester with my Merlin Annual Pass? Please book your time slot reservation via the Pre-book Portal. You can find further information here. Related articles Can I buy tickets online for the same day? Where can I find out information and purchase a Merlin Annual Pass? How do I contact you with a guest enquiry? When is SEA LIFE Manchester open? How do I purchase Friends and Family tickets with my Merlin Pass for SEA LIFE Manchester?