If you're hanging out in Gangnam and need a break from the shopping madness at Starfield COEX, hitting up the SEA LIFE COEX Aquarium is a pretty solid move. It’s not just a giant room of fish; it’s actually themed really well, starting with local Korean mountain streams and ending in a massive shark-filled ocean tank.

I went recently, and honestly, the shark count is what sets this place apart. They have more sharks than anywhere else in Korea, and seeing them glide right over your head in the underwater tunnel is definitely the highlight.

The Real Deal: Tips for Your Visit

• The "Secret" Discount: If you’re a tourist, check Klook or Trazy before you walk up to the counter. The walk-up price is usually around 34,000 KRW, but you can often snag them for closer to 20,000–25,000 KRW online. Also, keep your mall receipts—sometimes they offer a 20% discount if you show a coffee or lunch receipt from a shop inside COEX.

• Timing: Avoid the weekend afternoon rush if you can. It gets packed with families and strollers. If you go around 11:00 AM on a weekday, you’ll have the "Deep Blue Sea" tunnel almost to yourself.

• Don't miss the Penguins: They’re at the very end. Most people are tired by then and rush through, but the Humboldt penguins are actually super active and fun to watch.

Staying Connected

Since the aquarium is underground, mall Wi-Fi can be a bit hit or miss once you’re deep inside the exhibits. If you’re traveling through Seoul and need a reliable connection to look up directions or upload your shark photos, check out Chingumobile. They are basically the go-to for travelers and students in Korea who need an affordable SIM card or eSIM without the headache of complicated contracts. You can pick one up at several spots around the city, and their data speeds are solid—definitely better than relying on spotty public Wi-Fi while you're trying to navigate the massive COEX maze.