Best diving by month · 2026 guide

The Best Diving in Australia in October

Q: How is this list ranked?

Ranked from our species seasonality data: each site scores for the species recorded there that are at peak or good levels in October, then by how well documented the site is. Nobody pays to be listed.

Q: Can a business pay to appear here?

No. Listings and order come from our research only. Businesses can ask us to correct their details, but not to change their position.

Q: How current is this guide?

It is generated from the directory's latest research, checked in 2026. Conditions, operators and seasons change — confirm details with the operator before you book.

October is peak season for green turtle, grey nurse shark, humpback whale, nudibranchs, weedy seadragon at the sites below.

Sites are ranked by how many species are at or near their seasonal best in October. See the full month guide for water temperatures and what to avoid.

Tasselled wobbegong resting camouflaged on a rocky reef

Julian Rocks (Nguthungulli)

Byron Bay, New South Wales

Open Water · ≤18 m~15 m typical, 25 m maxBoat divereef · island

Where tropical and temperate waters meet — more than 20 shark and ray species recorded.

The ecological importance of the site comes from the meeting of tropical and temperate influences. Warm water arriving on the East Australian Current mixes with cooler temperate water, and species from both systems occur here together.

Look for: Green Turtle, Grey Nurse Shark, Humpback Whale, Leopard Shark (Zebra Shark)

Who takes you there Sundive Byron Bay Byron Bay Dive Centre

Blue Bay Divers

Full Julian Rocks (Nguthungulli) guide →

Scuba diver and green sea turtle above a tropical coral reef

Cook Island

Gold Coast, Queensland

Open Water · ≤18 m~14 m typical, 20 m maxBoat diveisland · reef

An aquatic reserve off Tweed Heads with a resident turtle population and seasonal grey nurse sharks.

The protected status has produced habituated marine life, and divers regularly encounter multiple turtles on a single dive.

Look for: Green Turtle, Grey Nurse Shark, Humpback Whale, Leopard Shark (Zebra Shark)

Who takes you there Gold Coast Dive Centre Gold Coast Dive Adventures

Full Cook Island guide →

Green sea turtle swimming above a sunlit coral reef

Flat Rock

North Stradbroke Island, Queensland

Advanced · 18–25 m~20 m typical, 30 m maxBoat divereef

Southeast Queensland's premier big-animal site — grey nurse sharks, mantas and turtles.

A gutter on the rock's northern side is a recognised grey nurse shark aggregation area in the cooler months, while manta rays arrive through summer.

Look for: Green Turtle, Grey Nurse Shark, Humpback Whale, Leopard Shark (Zebra Shark)

Who takes you there

Manta Lodge & Scuba Centre

Full Flat Rock guide →

Colourful nudibranch on a sponge garden with a diver behind

Bare Island

Sydney, New South Wales

Open Water · ≤18 m~12 m typical, 20 m maxShore divereef · muck

Sydney's most-dived shore site — weedy seadragons, extraordinary macro life and multiple routes.

The site offers several distinct routes at different depths, which is why it sustains that popularity — divers who have dived it a hundred times still find new things.

Look for: Eastern Blue Groper, Giant Australian Cuttlefish, Nudibranchs, Port Jackson Shark

Who takes you there Abyss Scuba Diving Pro Dive Sydney Sydney Dive Safari

Full Bare Island guide →

Ningaloo Reef

Ningaloo & Exmouth, Western Australia

Open Water · ≤18 m~15 m typical, 30 m maxShore dive · Boat divereef · drift

A fringing reef close enough to shore that in places you can swim to it from the beach.

For certified divers, the reef systems and offshore sites around the Exmouth Gulf provide the main scuba product, with drift diving along the reef edge and coral bommies inside the lagoon.

Look for: Green Turtle, Humpback Whale, Manta Ray, Spotted Eagle Ray

Who takes you there Exmouth Dive & Whalesharks Ningaloo Ningaloo Reef Dive Dive Ningaloo Ningaloo Blue Dive

Full Ningaloo Reef guide →

Wolf Rock

Rainbow Beach & Wolf Rock, Queensland

Advanced · 18–25 m~25 m typical, 35 m maxBoat divereef

An offshore volcanic pinnacle and one of the few known aggregation sites for pregnant grey nurse sharks.

The site is particularly associated with grey nurse sharks and large rays. It is one of the few known aggregation sites for pregnant female grey nurse sharks, which gives it genuine conservation significance.

Look for: Grey Nurse Shark, Humpback Whale, Leopard Shark (Zebra Shark), Manta Ray

Who takes you there

Wolf Rock Dive Centre

Full Wolf Rock guide →

Edithburgh Jetty

Yorke Peninsula & Edithburgh, South Australia

Easy · <10 m~6 m typical, 9 m maxShore divepier · muck

One of the world's great muck dives — an unremarkable jetty hiding extraordinary small life.

Jetty sites are often described as easy because access is from shore. That can be misleading, and Edithburgh illustrates why: shallow does not mean trivial, and the best diving here happens at night.

Look for: Giant Australian Cuttlefish, Leafy Seadragon, Nudibranchs, Seahorses & Pipefish

Full Edithburgh Jetty guide →

Exmouth Navy Pier

Ningaloo & Exmouth, Western Australia

Open Water · ≤18 m~10 m typical, 15 m maxShore divepier

A structure dive with extraordinary fish density, on Defence land with controlled access.

The structure supports an extraordinary density of fish — grey nurse sharks, wobbegongs, giant groupers and vast schools crowded into a comparatively small area.

Look for: Grey Nurse Shark, Nudibranchs, Queensland Groper, Wobbegong

Who takes you there Exmouth Dive & Whalesharks Ningaloo Dive Ningaloo

Full Exmouth Navy Pier guide →

Two equipped scuba divers entering a calm Australian bay from shore

Lady Elliot Island

Bundaberg & Southern Great Barrier Reef, Queensland

Open Water · ≤18 m~15 m typical, 25 m maxShore dive · Boat divereef · island

A coral cay at the reef's southern tip, with some of Australia's most reliable manta encounters.

Cleaning stations around the island produce reliable seasonal manta activity, and the clear water typical of the southern reef makes it exceptional for photography.

Look for: Green Turtle, Humpback Whale, Loggerhead Turtle, Manta Ray

Who takes you there Lady Elliot Island Eco Resort

Full Lady Elliot Island guide →

Technical scuba diver approaching a shipwreck in deep blue water

D'Entrecasteaux Channel

Hobart, Tasmania

Open Water · ≤18 m~12 m typical, 25 m maxShore dive · Boat divereef · wreck

Sheltered channel diving near Hobart, with jetties, reefs and handfish habitat.

Sites include jetties, reef systems and wrecks, with the channel's cold, nutrient-rich water supporting dense temperate life.

Look for: Giant Kelp Forest, Seahorses & Pipefish, Spotted Handfish, Weedy Seadragon

Full D'Entrecasteaux Channel guide →

Questions about this list

How is this list ranked?

Ranked from our species seasonality data: each site scores for the species recorded there that are at peak or good levels in October, then by how well documented the site is. Nobody pays to be listed.

Can a business pay to appear here?

No. Listings and order come from our research only. Businesses can ask us to correct their details, but not to change their position.

How current is this guide?

It is generated from the directory's latest research, checked in 2026. Conditions, operators and seasons change — confirm details with the operator before you book.

All best-of guides →

Questions about this list

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