Tasmania's clear, clean waters offer some of the best temperate diving in the world. With more than 5,000 kilometres of coastline and more than 45,000 ha of marine reserves, there's no shortage of underwater wilderness to explore.
Tasmania's East Coast is a diving mecca with protected, deep water dive sites. The town of Bicheno has exceptional diving. Try the popular Paradise Reef, the deep water Golden Bommies and the gullies of Magic Garden in the Governors Island Marine Reserve, one of the best dive sites in Australia.
Further south, the highest marine biodiversity is found around Maria Island. Also off Maria Island is one of Tasmania's best dive sites, the Troy D. The 55 metre former Hopper Barge was scuttled in 2007 to form an artificial reef and is now teeming with marine life.
Also in the south are the giant kelp forests, underwater caves and deep water sponge gardens of the Tasman Peninsula.
There's also great diving off Bruny Island with caverns, overhangs and extensive year-round kelp forests.
In the north west, you'll find good dives at Rocky Cape and Boat Harbour.
Tasmania's early maritime history also left the island with many shipwrecks. Underwater explorers with a taste for history can discover shipwrecks around Flinders and King Islands in Bass Strait and along Tasmania's East Coast.
Closer to Hobart, marine life teems among the shipwrecks at the Betsey Island Ships' Graveyard and at the underwater trails of Tinderbox Marine Reserve.
Visibility in Tassie's dive sites ranges from 12 m in summer to more than 40 m in winter when serious wetsuits are required.
Diving courses are available as well as guided charters, gear hire and diving packages.