Do your prices differ online to what they are on the day? Yes. Tickets purchased online in advance give a 20% saving and you are also covered by our rainy day guarantee. To pre-book your tickets please visit here. Related articles Can I use my Tesco Clubcard for entry into SEA LIFE Weymouth? Do you accept promotional/discounted vouchers at SEA LIFE Weymouth? How long will it take me to get around the whole attraction?