€11.50 discount on admission as a member

An attractive offer with a promo code for members of BillyBirds Friends in the 2026 season.

Discover the fascinating underwater world of the Dolfinarium in Harderwijk! 🐬

Come face-to-face with impressive marine mammals, enjoy educational shows, and experience a day full of fun for the whole family. Between shows, children can let off steam in the playgrounds or, weather permitting, cool off at the Waterpret water attraction.

As a BillyBird member, you pay only €17.50 per ticket for both adults and children. That means a saving of €11.50 per ticket compared to the regular box office price of €29 for adults. An affordable day out for the whole family!