Poor value for money for a haphazard tourist attraction

We paid EUR18 as Canary Island residents but adult tourists pay 25, which is more than the London Aquarium. The display screens are tediously slow in showing what is in each tank and there has been no effort to theme the aquarium, either by water depth or geographical area of the world. Having been to various aquaria elsewhere, this one was disappointing and not worth the trek if you're staying in the south of Gran Canaria.