I recently saw Stellar sea lions in Alaska (both in the wild and in captivity at Alaska Sealife Center). I did not realize there were some in European collections.
@Arizona Docent According to Zootierliste, there are Steller's sea lions in the following Western European collections: Valencia's Oceanographic, the Harderwijk Dolfinarium (Netherlands), and Antibe's Marineland (France). I'm still curious to know how they got these two year-old males.
These two males where born in Dolfinarium Harderwijk, all the males in Marineland Antibes where also born at Harderwijk.