The Sea Life Centre is right next to Brighton Pier and the Brighton Wheel.
From Brighton Station, the frequent Number 7 bus will take you as far as the bottom of St James’ Street on the Old Steine.
The less frequent Number 14 buses will take you all the way from the station to the Sea Life Centre.
The City Centre Car Parks can be very expensive but are avoidable. The closest parking for the Sea Life Centre is along Madiera Drive and while this is pricey too you only need a ticket until 8pm.