Snorkeling in Guam: 200+ Fish Species at Piti Bay

Walk a sea bridge to the reef, then swim among butterflyfish, angelfish and soft corals around the Underwater Observatory.

Snorkeling in Guam's Piti Bay Marine Preserve combines a guided 50-minute reef exploration with access to Fish Eye Marine Park's Underwater Observatory. You walk along a scenic sea bridge overlooking the preserve, then enter the water with a certified lifeguard to swim among 200+ fish species and 80 coral varieties in depths of 6 to 30 feet. Snorkeling gear, shower facilities and hotel transfer are included. Infants can ride in a kayak with the guide, and small children comfortable in water join at no extra charge.

The experience

The activity starts on the Fish Eye sea bridge, where you walk above the reef and watch the waters of Piti Bay below before entering the water. A certified lifeguard meets you at the Underwater Observatory entry point to cover safety basics and proper snorkeling technique, then checks that you're comfortable before the group moves into the reef itself. The water here ranges from 6 to 30 feet deep, shallow enough for beginners but with enough depth to explore the full seascape.

Once in the water, you swim around the observatory among butterflyfish, angelfish, hard and soft corals, and occasionally sea turtles. This single reef zone holds more than 200 fish species and 80 different coral types. A density that makes the 50-minute window feel packed with color and movement. The guide stays with the group throughout, pointing out what you're seeing and keeping everyone safe. Infants can experience the snorkeling portion by riding in a kayak with the guide or a parent, staying close to the group without entering the water themselves.

After the reef time, you return to the bridge and facilities at Fish Eye Marine Park, where shower and changing rooms with lockers let you rinse off and dry before heading back. Snorkeling gear (fins, life jacket and mask) is provided. Hotel transfer back to your accommodation is included in most options, though you can also choose to arrange your own transport and skip the transfer cost.

What’s included

• Snorkeling gear including fins, life jacket and mask.
• certified lifeguard instruction and guidance throughout the reef exploration.
• shower and changing facilities with a locker.
• hotel transfer back to your accommodation on most options.

Options for this experience

6 options

Standard No TransportationGuide in English · 09:20, 10:20 and 11:20Duration: 4 hours, 3 hours and 40 minutes (including driving time). Check-in time varies by session.

Standard with TransportationGuide in English · 09:20, 10:20 and 11:20Duration: 4 hours, 3 hours and 40 minutes (including round-trip transfer). Pickup time depends on the session and hotel stay. Bus and/or van operated by Fish Eye Marine Park or Sanko Enterprises. Pickup is included.

Includes lunch, no transportationGuide in English · 09:20, 10:20 and 11:20Duration: 4 hours, 4 hours and 30 minutes (including driving time). Check-in times depend on the session. Island and International Buffet, including a fountain drink (self-service soft drink).

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Includes lunch and transportationGuide in English · 09:20, 10:20 and 11:20Duration: 5 hours, 4 hours and 40 minutes (including round-trip transfer). Pickup times vary by session and hotel stay. International and Island Buffet with self-service fountain soft drinks. Bus or van operated by Fish Eye Marine Park or Sanko Enterprises. Pickup is included.

Includes dolphin watching and lunchGuide in English · 08:45 and 09:45Check-in depends on the session. Duration: 4 hours, approximately 4 hours including travel time. International and Island Buffet with iced tea and fruit water.

Includes dolphin watching and lunchGuide in English · 08:45 and 09:45Includes transportation. Duration: 4 hours, 4 hours (including round-trip bus ride). Pickup time and hotel vary depending on your hotel and session. Island Garden Buffet with iced tea and fruit water. Bus and/or van, pickup is included.

Options with the same name differ in details you'll see when you check availability.

You'll see the exact price of each option when you check availability.See dates and prices

Before you book

Days and timesEvery day except Monday and Wednesday5 departure times: the first at 08:45, the last at 11:20

AgesAdult (21 and older) · Youth (12 to 20 years) · Child (4 to 11 years) · Infant (under 4): free

GroupUp to 15

Live guideEnglish

Meeting point and pickupHotel pickup is optional; you can also go straight to the meeting point. Ends back at the starting point.You can choose from 14 pickup points.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

ConfirmationConfirmation within 48 h

Prices and times updated today

Good to know

Low physical effortStroller-friendlyPets welcomePublic transport nearbyNot recommended during pregnancyNot recommended with heart problemsInfants must sit on laps

Operated by Fish Eye Marine Park

Is this one for you?The 50-minute timeframe keeps the reef exploration focused and manageable for families with young children or first-time snorkelers who want a complete introduction without a full-day commitment. If you need flexibility on transport, you can book without the transfer and use public transit or your own car instead.

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Top questions

Can children come?

Yes. Ticket types: Youth (12 to 20 years); Child (4 to 11 years); Infant (under 4): free.

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

How deep is the water where I'll be snorkeling at Piti Bay?

The water ranges from 6 to 30 feet deep around the Underwater Observatory, so you can explore both shallow coral formations and deeper reef zones within the same 50-minute session.

What fish and coral will I actually see at Piti Bay Marine Preserve?

The reef holds over 200 fish species and 80 different coral types, including butterflyfish, angelfish, hard and soft corals. Sea turtles appear occasionally, and the density of life makes even a short snorkel feel visually full.

Is snorkeling in Guam suitable if I've never done it before?

Yes, the activity is designed for all fitness levels and beginners. A certified lifeguard teaches you safety and technique at the entry point before you enter the water, and the shallow starting depths let you build confidence.

What's included in the snorkeling activity, and what do I need to bring?

Snorkeling gear (fins, life jacket and mask), shower facilities and a locker are included. Hotel transfer is included in most options. Bring your own swimwear, towel and any toiletries you need, and use reef-safe sunscreen with non-nano zinc oxide to protect the coral.