SEA LIFE Busan Aquarium

At the edge of Haeundae Beach sits an aquarium run by the UK-based SEA LIFE brand. It first opened under the name "Busan Aquarium" before the brand changed, but the 15-million-visitor count tells you it's been a local favorite for a long time either way.

There are eight exhibit halls in total, and the standout is an underwater tunnel where sharks and rays swim directly overhead. Beyond that, there's a coral reef tank, tropical freshwater fish, and marine mammal and bird exhibits with otters and penguins — a strong pick for families with kids.

Worth flagging honestly: the exact adult admission price shifts often with the season and promotions, so this guide doesn't list a fixed number. Check the official site (visitsealife.com/busan) or an online booking platform for the current rate before you go — booking online ahead of time is usually cheaper than paying at the door.

Last entry is one hour before closing — 6pm on weekdays, 7pm on weekends — so give yourself enough time if you're visiting in the late afternoon.

It's within walking distance of Haeundae Beach and BUSAN X the SKY, so it pairs easily into the same outing.