Overview
In the Piti marine preserve, a 300m boardwalk leads to an observatory sunk 10m into the bay. Spiral down and 24 windows open onto coral and some 200 species of reef fish — the island's only way to enter the reef world dry, at any age. The tower stands in a wartime bomb crater the coral reclaimed, which concentrates the fish. Dinner shows with Chamorro dance and snorkel packages round out the offering.
💰 Tickets
Observatory about $15 adults, $8 children; dinner-show and snorkel packages extra.
🎟️ Check ticket prices →Opening Hours
8:00-17:00 (dinner shows in the evening)
🚇 Getting there
20 minutes south of Tumon on Route 1.
⏱️ How long to visit
About 1 hour.
🌅 Best time to visit
Slot it first on a morning southern loop.
Travel Tips
Morning water is clearest, and the boardwalk views over Piti Bay are half the ticket's worth.
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🇰🇷 Tips for Korean Travelers
Practical info for Korean travelers heading to Guam, United States from Seoul (ICN).
Korean Passport · Visa
Check visa rules for United States on the Korean MOFA travel advisory site before flying — visa-free, visa-on-arrival or e-visa rules change often. Keep at least 6 months of passport validity.
Flight from Incheon (ICN)
Compare direct and connecting flights from Incheon (ICN) to Guam on Skyscanner or Google Flights. Early-morning departures from Korea are usually the cheapest option.
KRW ↔ Local Currency
Check the live FX widget above for the latest KRW rate. Korean travel cards like Travel Wallet, Hana EZ and Toss FX offer free local ATM withdrawals and competitive rates.
Korean Community · Korean Food
Many cities have an active Korean community in Guam with Korean restaurants, mini-marts, and Korean-speaking guides. Search Naver Cafe or KakaoTalk open chats for "Guam 한인" before you go.
Attractions near Fish Eye Marine Park
Tap a pin on the map to jump to that attraction.
Ypao Beach Park
The public park at Tumon Bay's south end — Guam's best easy snorkeling, straight off the sand.
📍 11.1km away
Tumon Bay
Guam's signature 2km crescent along the hotel strip — a reef-sheltered natural pool safe even for kids.
📍 13.4km away
Two Lovers Point
Guam's iconic lookout, 123m above Tumon Bay, wrapped in the legend of two Chamorro lovers.
📍 15.1km away
Things to Do in Guam
Dolphin Watching Cruise
Boat out to meet wild spinner dolphins — usually bundled with snorkeling and fishing on a half-day cruise.
Sea Walker & Snorkeling
Walk the seafloor in a dive helmet — no swimming skills needed to enter the reef.
Southern Island Loop Drive
War park, Fish Eye, Cetti Bay, Umatac, Inarajan pool and Talofofo Falls — the classic half-day drive.