After years of diving and photographing marine life, Matt has brought together a collection of extraordinary underwater images showcasing the incredible diversity of Tasmania’s marine environment.
From colourful reefs and towering kelp forests to fascinating sea creatures, tiny hidden critters and mysterious nocturnal life, “Beneath Tasmania” takes readers on a journey into a world many rarely get to experience.

More than just a photography book, it is designed as a naturalist’s field journal, combining Matt’s beautiful photography with personal field notes, fascinating scientific insights, podcast links and tips for discovering and photographing marine life.
Tasmania sits at the heart of the Great Southern Reef, a temperate rocky reef that stretches along Australia's south coast, with more than 70% of its species found nowhere else on earth. With his incredible underwater photography, Matt Testoni invites people to learn more and connect with the unique marine life we have here in Tasmania.
Whether you're an experienced diver, keen snorkeller, marine enthusiast or simply curious to learn more about Tasmania’s marine world, there is something for everyone.

After years of diving and photographing marine life, Matt has brought together a collection of extraordinary underwater images showcasing the incredible diversity of Tasmania’s marine environment.
From colourful reefs and towering kelp forests to fascinating sea creatures, tiny hidden critters and mysterious nocturnal life, “Beneath Tasmania” takes readers on a journey into a world many rarely get to experience.

More than just a photography book, it is designed as a naturalist’s field journal, combining Matt’s beautiful photography with personal field notes, fascinating scientific insights, podcast links and tips for discovering and photographing marine life.
Tasmania sits at the heart of the Great Southern Reef, a temperate rocky reef that stretches along Australia's south coast, with more than 70% of its species found nowhere else on earth. With his incredible underwater photography, Matt Testoni invites people to learn more and connect with the unique marine life we have here in Tasmania.
Whether you're an experienced diver, keen snorkeller, marine enthusiast or simply curious to learn more about Tasmania’s marine world, there is something for everyone.

Nudibranchs are molluscs that lose their shell after the larval stage. There are more than 3,000 species worldwide, and more than 400 occur in south-eastern Australia.
The big-bellied seahorse (Hippocampus abdominalis) is one of three seahorse species found in Tasmanian waters. Reaching up to 35 cm in height, they are one of the worlds largest seahorses, with a big round belly as their distinctive feature.
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