Gold Coast · Queensland
Cook Island
An aquatic reserve off Tweed Heads with a resident turtle population and seasonal grey nurse sharks.
Cook Island, just off Fingal Head near Tweed Heads, is a small island aquatic reserve and one of the most reliable turtle sites on the east coast.
The protected status has produced habituated marine life, and divers regularly encounter multiple turtles on a single dive.
Grey nurse sharks aggregate seasonally, and leopard sharks arrive in summer.
Max depth
20 m
typically 14 m
Access
boat
Current
variable
Water temp
19–26°C
Level
intermediate
| Region | Gold Coast |
|---|---|
| State | Queensland |
| Access | boat |
| Site type | island, reef |
| Minimum depth | 5 m |
| Typical depth | 14 m |
| Maximum depth | 20 m |
| Current | variable |
| Visibility | Commonly 10–25 m |
| Water temperature | Roughly 19–26°C |
| Experience level | beginner, intermediate |
These are guidance categories, not guarantees. Conditions on the day, and an operator’s own requirements, override any classification here.
- green and loggerhead turtles
- grey nurse sharks seasonally
- leopard sharks in summer
- wobbegongs
- eagle rays
- schooling fish
Seasonality
- Grey nurse sharks more associated with cooler months.
- Leopard sharks broadly summer.
Access
- Boat access from Tweed Heads or the Gold Coast.
- Short transit.
- Aquatic reserve — no collection.
Hazards
- current
- surge close to the island
- swell exposure
What you might see here
Species documented at this site, with seasonality and etiquette on each page.
Operators servicing this site
Businesses documented as regularly diving this site. Only operators we have established a connection for are listed.
Training that is genuinely useful here
Not a list of everything available — the qualifications that actually change what you can do at this site.
Related dive sites
Worth reading alongside this one.
Dive sites nearby
Other documented sites within range, nearest first — useful for building a trip rather than a single dive.
Other dive businesses in the area
Not documented as servicing this site, but close enough to be useful for fills, hire or advice.
Frequently asked questions
How deep is Cook Island?
Depths range from around 5 metres to roughly 20 metres, with a typical profile around 14 metres. Conditions and route selection change this considerably.
Is Cook Island suitable for beginners?
It can be, in reasonable conditions and with appropriate supervision. Conditions on the day matter more than certification level, and operators may impose their own requirements.
How do you get to Cook Island?
Access is boat based. Boat access from Tweed Heads or the Gold Coast.
Is there current at Cook Island?
Current is recorded as variable. Conditions vary daily and should be checked close to the day.
What will I see at Cook Island?
Commonly reported marine life includes green and loggerhead turtles, grey nurse sharks seasonally, leopard sharks in summer, wobbegongs, eagle rays, schooling fish. Sightings are never guaranteed, and several species here are strongly seasonal.
When is the best time to dive Cook Island?
Grey nurse sharks more associated with cooler months. Leopard sharks broadly summer. There is rarely a single best month — the right time depends on what you want to see.
Where is Cook Island?
Cook Island is in the Gold Coast region of Queensland.
Last researched: September 2026. Dive businesses change frequently — confirm current services, prices and requirements directly with the operator before booking.