A very pleasant and relaxing way to spend a day in the middle of nature. It is really impressive, educative and there are also a couple of attraction suitable for children, starting from the animals themselves which are very friendly. They are nursing injured seals and hosting them which is really cool.
There is also a restaurant. Outside the actual building you enter directly the dune area which is absolutely superb!
The ~20 minutes boat trip(from Den Helder), to get on Texel Island also offers a beautiful view. It is important to get the bus that takes you to Ecomare right after you go off the boat as it only rides once every hour or so, during the weekend, at least.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.