Dolfinarium Harderwijk B.V. owns and operates a marine mammals park. The company was founded in 1965 and is based in Harderwi ... jk, the Netherlands. As of January 2015, Dolfinarium Harderwijk B.V. operates as a subsidiary of Aspro Parks. Come and visit the Dolfinarium! There you get to meet the most extraordinary inhabitants of the sea: dolphins, walruses, sea lions, seals, porpoises, rays and sharks. read more