Walrus Network

Shizuku's birth was the very first ever reported on Walrus Network, and her pregnancy marks the unique milestone of the arrival of a second generation of walruses on WN's tenth anniversary, which we celebrated in March. 📷: newborn Shizuku with her mother, Uurya, at Otaru - 2016

Shizuku was born on April 6th, 2016 at the Otaru Aquarium — the fifth of six calves born to her parents, Uchio and Uurya. She was transferred to Kamogawa Sea World in 2020 to be paired with their young bull, Riku, upon reaching maturity.

Kamogawa Sea World's 10-year-old walrus Shizuku is currently pregnant and due this season. This is her first pregnancy, and the second sired by the park's resident bull, Riku.

@_walrus0123 また、シズクは2016年に小樽水族館で、ウチオとウーリャの間に生まれました。 より詳しい家系図については、私のウェブサイトの「鴨川シーワールド」のページをぜひご覧ください。 walrusnetwork.org/park/kamogawa-… ※このメッセージは翻訳されたものです。誤りがありましたら申し訳ありません。🙇‍♀️

@_walrus0123 こんにちは！少しでもお役に立てれば幸いです。 2000年、タックとムックの間にミックが誕生しました。 その後、ミックとタックの間に、2007年にミナ、2013年にリクが生まれました。 そして2026年には、ミナとリクの間に赤ちゃんが誕生しました。

鴨シーのセイウチの家系図が知りたい、調べても全然出てこない😭😭😭

Did you know the world's very first living captive-born walrus can be heard in Star Wars? Read more about it here!

@manzi_maru__fj こちらはミナです！

ベビー爆誕に乗じてお聞きしたいのですが、行くたびにぷかぷか浮いてキバを見せているこの子のお名前はなんというのでしょうか…家族みんなで可愛いと話していて 2024.10と2025.07のお写真です。 #鴨川シーワールド #セイウチ

📷: x.com/i/status/20496… 📷: x.com/i/status/20496… 📷: x.com/i/status/20496…

The new bull calf brings Kamogawa's current herd up to four individuals; the pup and his parents, in addition to 10-year-old unrelated cow Shizuku. I would like to share my sincere gratitude to @404notfoundorca for graciously allowing me to share their images!

Kamogawa Sea World's 18-year-old walrus cow, Mina, delivered a male calf in April of 2026. The calf is Mina's fifth, from her fourth pregnancy, and he is the firstborn of his father, 13-year-old Riku.

Though Uchi is currently the oldest living cow, she is the third oldest living walrus overall; preceding her are SeaWorld Orlando's 43-year-old Garfield, the longevity record-holder for bulls, and the Otaru Aquarium's 36-year-old bull, Uchio.

Sea Paradise, together with SeaWorld Abu Dhabi, currently houses the third largest collection of walruses in the world.

With the recent passing of SeaWorld Orlando's Slowpoke at 48 years of age, the title of oldest living walrus cow now belongs to 35-year-old Uchi of Yokohama Hakkeijima Sea Paradise. 📷: ascii.jp/elem/000/004/0…