How old do you have to be to complete the Marine Biologist for the Day Experience? The minimum age for this is experience is 11 years with the maximum being 16 years. Related articles What is included in the Marine Biologist for the Day Experience? Who is the Behind the Scenes Tour suitable for? What do I need to bring with me to complete the Marine Biologist experience? What is included in the Behind the Scenes Tour? Do you offer a carers ticket for the snorkelling with sharks experience?