Sentosa's online Season Pass for the enlarged Singapore Oceanarium gives you six months of repeat visits, plus two $5 meal vouchers and two $5 retail vouchers. Adult passes are $135 and child passes are $100.
Pair Universal Studios Singapore with the newly enlarged Singapore Oceanarium in one online bundle, with priority entry to both and 7 days to use each ticket. Adult tickets start at $115 in non-peak months, with savings of up to $24 versus usual prices.