1. Chimelong Spaceship (Zhuhai, China) 

 Currently the world’s largest aquarium by total capacity, it holds an astounding 75.35 million L, with its flagship tank alone containing 56.45 million L .

2. SeaWorld Abu Dhabi (Yas Island, UAE) – Opened May 2023, this mammoth aquarium spans 58 million L in total, featuring a massive 25 million L main tank .

3. Chimelong Ocean Kingdom (Hengqin, China) – Previously the world’s largest, it still impresses with 48.75 million L across its structures and a 22.7 million L whale‑shark tank .

4. S.E.A. Aquarium (Sentosa, Singapore) – A long‑standing marvel, housing 45.2 million L in total with its iconic 18.17 million L open‑ocean habitat .

5. L’Oceanogràfic (Valencia, Spain) – Europe’s largest, with 42 million L total capacity and a 7 million L main tank replicating deep ocean ecosystems .

– Honourable mention: Georgia Aquarium (Atlanta, USA), with ~41.6 million L total and a 23.8 million L “Ocean Voyager” exhibit—the largest outside Asia .

Each of these aquatic giants blends mammoth scale with immersive habitats—from whale sharks and manta rays to ultra-long acrylic tunnels—making them pinnacles of marine education, architecture, and conservation.

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