How old can you be to enter the attraction unaccompanied? Children aged 15 years or younger must be accompanied by an adult aged 18 years or older into the attraction. Related articles Why do you not have a child rate? Is SEA LIFE Birmingham suitable for children? Can I eat and drink once inside SEA LIFE Birmingham? Are there any restrictions with an Adult and Toddler ticket? What’s included in the birthday party at SEA LIFE Birmingham?