Are there any restriction dates for using my Merlin Pass at SEA LIFE Birmingham? For information regarding restrictions, please visit https://www.merlinannualpass.co.uk/ Related articles I'm a Merlin Pass holder, do I need to pre-book? How do I purchase Merlin Pass Friends and Family Tickets? Can I purchase tickets on the day? I’ve already used my pre-book allocation but would like to book for Summer instead, can I cancel? Where can I find information on Merlin Passes?