If you want active time on the water in Guam, these three choices take very different forms. One is a beginner-friendly scuba session, one is a small-group snorkeling or freediving tour, and one is an evening cruise with dining and dolphin watching.
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This comparison is designed for travelers researching things to do in Guam. For related planning, see our TourPickGuide experience comparisons and Guam tours and experiences.
Beginner scuba
Start with the leading match, or keep reading to compare all three options by traveler fit, duration, and feedback.
Guam tour options at a glance
Use this comparison to match the itinerary, traveler feedback, duration, and key features to your preferred travel day.
| Tour | Best for | Rating | Reviews | Duration | Key point | Link |
|---|---|---|---|---|---|---|
| Beginner scuba | travelers who want a first scuba experience with close instructor support | ★ 5.0/5 | 21 reviews | Approx. 2 hr 30 min | No certification is required. | View on Viator |
 Small-group snorkel | families, beginners, or freedivers who want a flexible reef outing | ★ 4.9/5 | 46 reviews | Approx. 1 hr 30 min | Small groups keep the outing personal. | View on Viator |
 Sunset cruise | travelers who prefer an evening boat outing with food-and-drink options | ★ 4.5/5 | 37 reviews | Approx. 2 hr–3 hr | It combines a sunset cruise with dinner options. | View on Viator |
Guam tour reviews and key differences
Each option includes its own photo gallery, overview, key features, traveler profile, and direct Viator link.
Scuba option
Experience Scuba Diving – No Certification Needed!
Best for: travelers who want a first scuba experience with close instructor support
This scuba experience is built for travelers who want to try diving without prior certification. The instructor gives a briefing before you enter the water, and the group size stays small so the guide can stay close. You can choose between one or two dives at checkout, and the activity takes place from a beach shop location in Apra Harbor. The package includes all equipment plus on-site basics such as drinking water, showers, and changing rooms. It is a straightforward way to spend time underwater if you want a more structured experience than snorkeling.
First-time scuba in a small guided group
- No certification is required.
- All equipment is provided.
- Groups are limited to four per guide.
Snorkel and freedive option
Guam's 5* Guided Snorkeling/Freediving Tour!
Best for: families, beginners, or freedivers who want a flexible reef outing
This tour is set up for travelers who want a shorter reef outing with a flexible activity style. You can snorkel or freedive with a guide, and the format is suited to families, first-timers, and more experienced guests in the same small-group setting. The inclusions cover mask, snorkel, boots, a safety vest if needed, and drinking water, along with shower and changing facilities on site. The route description points to shallow reef areas for easier swimming and deeper drop-offs for freediving, so the feel of the outing depends on how your group wants to use the water time.
Guided snorkeling or freediving on a reef
- Small groups keep the outing personal.
- Snorkeling gear and a professional guide are included.
- It works for both beginners and more confident freedivers.
Cruise option
BIG Sunset Cruise – Dinner & Dolphin Watching in Guam
Best for: travelers who prefer an evening boat outing with food-and-drink options
This experience is a boat-based evening outing rather than a swim or dive activity. The cruise is centered on sunset sightseeing and dolphin watching, with food and drink included on the dinner-cruise options. The product also lists a cruise-only version, which excludes transportation, food, and drinks, so the experience changes depending on the option selected. Departure can be from one of several launch sites, and the operator notes that guests need to arrive on time because the boat will not wait. It suits travelers who want a more relaxed group setting and prefer to stay on the water without getting in.
Evening cruise with dining and dolphin watching
- It combines a sunset cruise with dinner options.
- Dolphin watching is part of the experience.
- Some versions include hotel pickup and drop-off.
How to choose a Guam itinerary style
Pick the scuba or snorkeling option if you want your time focused on being in the water with a guide and a small group. Choose the cruise if you want a slower evening plan that combines the ocean, onboard dining, and sightseeing without needing to swim or dive.
Beach shop dive session
Meet at the beach shop location in Apra Harbor for a guided dive experience with equipment provided.
Reef tour from the beach shop
A guided reef outing with shallow areas for easy snorkeling and deeper sections for freediving.
Sunset boat cruise
An evening cruise that launches from one of several sites and can be booked with or without transport and dining.
Before you book in Guam
Check the live product page before booking. Departure details, activity order, inclusions, and available options can change.
Guam booking checklist
- Check the selected option carefully, since transportation, food, and drinks can change by package.
- Arrival timing matters for the cruise, and the launch site may change close to departure.
- Optional gratuities are not included where they are listed as exclusions.
Guam tour questions answered
Which of these Guam experiences is best for a first-time water activity?
The guided scuba and the snorkeling tour both work for first-timers, but the scuba option is specifically set up for people without certification, while the snorkeling tour is the lighter and more flexible choice.
Which option includes transportation?
Transportation depends on the selected option. Some scuba and cruise choices include hotel pickup, while other versions are explicitly sold without transportation.
Which experience is most focused on group time rather than instruction?
The sunset cruise is the most social, low-effort choice, while the scuba and snorkeling products are more activity-focused and centered on guide support in the water.