When is SEA LIFE Blackpool open? Opening times at SEA LIFE Blackpool vary throughout out the year. For our opening times please click here. We advise that it will take you 1.5-2 hours to explore all of SEA LIFE Blackpool. Related articles My voucher says I can use it online - where do I enter my code? How do I purchase Merlin Pass Friends and Family tickets? Does SEA LIFE Blackpool have a car park? Am I entitled to a free carer ticket? If I arrive at last entry will I still have enough time to view the whole attraction?