Glide from marina to marine reserve to watch spinner dolphins and then descend into Fish Eye Underwater Observatory for a dry 360° view of Guam’s reef life. Expect 2–2.5 hours of accessible, family-friendly marine wildlife viewing.
More ways to explore the area's outdoor wonders
A warm trade wind slides across the marina as the cruiser eases away from the dock — mango juice in hand, the ocean opens into a moving stage. The high‑speed boat cuts a clean line across the bay and the guide scans the water, calling out the first fins. Spinner dolphins soon appear, arching and spinning above the blue, their energy pushing the rhythm of the trip.
Difficulty
easy
Duration
2–2.5 hours
Fitness Level
Suitable for most fitness levels; requires ability to climb stairs (72 steps) at the observatory and board a small boat.
Wildlife
History
Piti Bay and the surrounding reefs have long supported Chamorro communities; modern marine reserves in Guam seek to balance traditional use with habitat protection.
Conservation
Tours operate within a protected marine reserve; guests are asked to use reef‑safe products and avoid feeding or disturbing wildlife to minimize impact.
Reserve your spot on the Dolphin Watching Cruise and Underwater Observatory Viewing today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Take seasickness prevention
If you’re prone to motion sickness, take medication an hour before departure and sit mid‑boat where motion is least pronounced.
Use reef‑safe sunscreen
Apply non‑nano zinc‑oxide sunscreen before boarding to protect coral and prevent frequent reapplication at sea.
Bring a light coverup and non‑slip shoes
Sun reflects off the water; a breathable long sleeve and sturdy sandals improve comfort on deck and during boarding.
Charge camera batteries and use a fast shutter
Dolphin behaviors are quick — continuous shooting or a high shutter speed increases the chance of sharp action shots.
Reef‑safe sunscreen (non‑nano zinc oxide)
Protects your skin and the coral; apply before boarding.
summer
Motion sickness medication or acupressure bands
Helps prevent nausea on the open water, especially if you’re prone to seasickness.
Light windbreaker or sun coverup
Shields against wind and sun during the boat ride.
Waterproof camera or phone case
Protects electronics and enables better action shots of dolphins and flying fish.