Dive sites
Osmanli Wreck (D'Estrees Bay)
Kangaroo Island · SA · Wreck · Shore or Boat
Explore →THE DIVER’S RESOURCE CENTRE
Better questions. Useful answers.
Find a lesson, look up a word, check the forecast or find the manual for your gear. Bring your next diving question here.
FIND YOUR NEXT ANSWERNEW / INTERACTIVE TOOLS
Planners, checklists & logs
Eight tools to organise a trip, compare courses, keep equipment records and prepare useful notes.
Open the tools →01 / BEFORE YOU TRAVELWeather & dive preparation
Official forecasts, tide information and a worksheet to take to your briefing.
Open the preparation resources →02 / KNOW YOUR EQUIPMENTManuals & manufacturer support
Find the correct documents for your model and prepare a useful support enquiry.
Find your brand →Search places, operators and learning
Search Australian dive sites, dive centres, regions, published guides, courses and definitions in one place. Filter by type to narrow your results.
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Dive sites
Osprey Bay
Ningaloo – Exmouth · WA · Reef · Shore
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Otago Hulk (Otago Bay)
Hobart & Derwent · TAS · Wreck · Shore
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Otter Reef
Mission Beach & Cassowary Coast · QLD · Reef · Boat (day trip)
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Outer Bommies (Norah Head)
Central Coast · NSW · Pinnacle/Bommie · Boat
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Outer Corsair Wall
Port Phillip Heads · VIC · Wall · Boat
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Outer Doughboy (St Helens Rocks)
Tasmania North-East · TAS · Wall · Boat (day trip)
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Outer Flagstaff (North Head)
Sydney Northern Beaches · NSW · Reef · Boat
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Outer Gneerings
Sunshine Coast · QLD · Reef · Boat
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Outer Harbor Breakwater & Wharf
Adelaide Metro · SA · Shore/Rock Platform · Shore or Boat
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Outer Rock (Bustard Head)
Bundaberg & Agnes Water · QLD · Pinnacle/Bommie · Boat
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Outer Rock (Keppels)
Capricorn Coast & Keppel Islands · QLD · Pinnacle/Bommie · Boat (day trip)
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Outer Transit Caves
Rottnest Island · WA · Reef · Boat (day trip)
Explore →Glossary
Overhead environment
A setting with a physical obstruction to direct ascent to the surface, such as a cave or wreck interior.
Explore →Safety guides
Overhead environments
A physical barrier above you changes the escape problem, even when the surface is nearby.
Explore →Safety guides
Oxygen toxicity explained
Oxygen is essential for life, but too much exposure under pressure can injure the body.
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Oyster Stacks
Ningaloo – Exmouth · WA · Shore/Rock Platform · Shore
Explore →Dive centres
OzDive
Port Douglas · QLD
Explore →Courses
PADI Advanced Open Water Diver
Try different types of diving with an instructor and develop experience beyond entry-level training.
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PADI Deep Diver
Develop planning and awareness for deeper recreational dives under appropriate instruction.
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PADI Divemaster
Develop the skills and knowledge used to assist instructors and support certified divers within professional standards.
Explore →Guides
PADI Divemaster vs SSI Divemaster
Both lead into recreational dive leadership, but the programme structure, intermediate rating and centre relationship differ.
Explore →Courses
PADI Dry Suit Diver
Learn how a drysuit changes preparation, buoyancy and in-water responses.
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PADI Enriched Air Diver
Learn to plan and manage recreational enriched-air nitrox use.
Explore →Looking for a place or an operator?
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