A place to learn, discover and connect with Guam’s living waters
For more than 25 years, the Aquarium of Guam has been part of life on the island — a place where people come to explore, learn, and spend time together in the heart of Tumon. First opened in 1999, the aquarium has welcomed residents, students, military families and visitors from around the world.
At its centre is the iconic walk‑through tunnel, where visitors are surrounded by sharks, rays and tropical fish — an experience that has inspired generations.
Today, the aquarium is being reimagined for a new generation, with renewed exhibits, stronger storytelling and a deeper connection to the natural waters that make Guam unique.
Who we serve
The Aquarium of Guam holds a unique place on the island because it serves many different audiences — each in its own way.
A familiar place of leisure and connection — part of everyday life and shared experiences.
A place where young people begin to understand the marine life and environments that surround their island.
A welcoming and accessible experience for families and visiting personnel, offering time to relax and explore together.
One of the most popular things to do in Guam, offering visitors an immersive way to experience Guam’s marine life up close regardless of weather.
An important attraction that strengthens the island’s visitor experience and adds depth to what Guam offers.
Our values
The Aquarium of Guam exists to share and celebrate the aquatic habitats and wildlife of the island, while creating a place where residents and visitors can learn, explore and enjoy the living wonders of Guam’s waters.
Our values guide how we care for animals, design our experiences, and connect with people — shaping the aquarium as both a place of discovery and a place of enjoyment.
Guam’s waters are part of a single, interconnected system.
From freshwater flowing through the uplands, to mangroves, seagrass meadows and coral reefs, each environment plays a vital role. We help people understand these connections and the relationships that sustain life across the island.
We care for and present marine life with respect, responsibility and professionalism.
Through close, thoughtful encounters, we aim to build understanding and appreciation of the diversity and beauty of the animals that depend on Guam’s waters.
We approach our work with curiosity, care and evidence-based thinking.
Through interpretation, education and collaboration, we aim to reflect the best available understanding of aquatic environments and share this knowledge in ways that are clear and accessible.
Guam’s waters are deeply connected to its people.
We recognise and respect the cultural significance of the island’s marine environments, and aim to reflect this connection in how we present and interpret the natural world.
By bringing people closer to Guam’s living waters, we encourage awareness, responsibility and care.
We support conservation through education, partnerships and by inspiring visitors to value and protect the ecosystems that sustain life on and around the island.
A visit to the aquarium should be engaging, welcoming and memorable.
We create experiences where families, residents and visitors can spend time together, discover something new, and leave with a sense of wonder, enjoyment and connection.
Originally UnderWater World Guam
Originally opened as UnderWater World Guam, the aquarium quickly became more than a visitor attraction.
It became part of growing up on the island.
For many people in Guam, their first visit happens as a child — often through a school excursion.
These early experiences introduce the Guam marine life and ecosystems of the island’s waters in a way that is direct, engaging and memorable.
Over time, those visits continue with family and friends.
The aquarium becomes familiar — a place people return to, and a place that holds lasting memories.
Continue exploring
The history and the people behind the Aquarium of Guam.
The Aquarium of Guam offers residents and visitors an engaging and informative journey through the island’s aquatic habitats—freshwater, coastal and marine—revealing the beauty, diversity and interconnectedness of Guam’s marine life, while creating enjoyable and memorable experiences for all ages.
