Ep. 21: Kukuru mengunjungi akuarium yang hancur dan bertemu peneliti penyu di pulau terpencil.
Tayang pada 26 November 2021

Kukuru's work is not going well and when she goes to see the now demolished Gama Gama Aquarium, she is shocked. The next day, she is absent from work without official leave, and goes to a remote island, where she meets Misaki Guden, a sea turtle researcher and conservationist, who also happens to be Gousuke's wife. Kukuru helps Misaki with her work and decides to watch over the sea turtles as they hatch. On the other hand, Fuuka can't concentrate on her work because she is worried about Kukuru. Meanwhile, something strange happens to the Cape penguins that Fuuka is in charge of keeping. (Source: Wikipedia)
Episode
- Ep. 17 · Kukuru, Fuuka, dan Tsukimi Mengadakan Acara di Akuarium Tingarla
- Ep. 18 · Staf akuarium bersiap untuk acara cosplay makhluk laut meskipun Akari dikecualikan
- Ep. 19 · Fuuka dan Luka Shiroi Mengunjungi Akuarium Tingarla untuk Dokumenter Penguin
- Ep. 20 · Kukuru menghadapi pekerjaan yang sangat berat untuk pembukaan area baru sambil mengetahui tentang pembongkaran akuarium.
- Ep. 21 · Kukuru mengunjungi akuarium yang hancur dan bertemu peneliti penyu di pulau terpencil.
- Ep. 22 · Kukuru Kembali ke Akuarium Tingarla dengan Semangat Baru Setelah Penetasan Penyu Laut
- Ep. 23 · Direktur Aquarium Tingarla Mengumumkan Proyek Studi Kelautan di Tengah Kekhawatiran Lingkungan
- Ep. 24 · Staf Akuarium Tingarla bersiap untuk pernikahan Kukuru dan pembukaan area baru