Undine Reef
Why dive here
With 154+ marine species recorded in the area - including hammerhead sharks, sea turtles, tiger sharks and napoleon wrasse - Undine Reef offers some of Great Barrier Reef's richest reef diving. Water ranges 24-30°C, warmest January, February, March.
Undine Reef is one of those spots in the northern GBR that just *feels* right. It’s not about huge pelagics here, though you might catch a shark or a cruising manta if you’re lucky. For us, Undine is all about the coral architecture and the smaller, more intimate reef life. We love drifting along the reef edge, where the humps of *Turbinaria* coral rise like miniature cities, studded with vibrant patches of lettuce coral and smooth cauliflower coral. Keep an eye out for the residents: the big, bold rainbow parrotfish chomping away, leaving trails of sand in their wake, and the elegant Desjardin’s Sailfin Tangs weaving through the branching staghorn. We often find foxface rabbitfish tucked amongst the plate corals, and if you’re patient, you might spot a cloth-of-gold cone snail on the sandy patches. The light here can be incredible on a sunny day, painting everything in a kaleidoscope of blues and greens. It's a fantastic site for photographers focusing on macro and wide-angle reef shots. Come here for a relaxed, visually rich dive. It’s perfect for divers who appreciate the intricate beauty of a healthy coral reef and the smaller, captivating creatures that call it home.
Safety Notes
Strong currents typical this month (avg 30 cm/s). Good buoyancy control essential.
Nearest Dive Centres to Undine Reef
Dive shops near Undine Reef
Ocean Safari
ABC Dive & Snorkel
Quicksilver Connections
Reviews for Undine Reef
Conditions
Ocean conditions, forecast and tides for Undine Reef
Undine Reef Ocean Conditions
Monthly averages for Undine Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-15.65, 145.72) (5km away)
October Averages
Sea Temperature
26°C
80°F · Range: 24.5–29°C
Current Speed
30.07 cm/s
Direction: S (183.8°)
Chlorophyll-a
0.057 mg/m³
Very clear (oligotrophic)
Salinity
35.08 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
Plan & book
Ways to dive Great Barrier Reef, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Great Barrier ReefPlaces to stay
via Booking.comHotels and dive resorts near Great Barrier Reef.
Search stays in Great Barrier ReefDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near Undine Reef
Prices from Booking.com. We may earn a commission at no extra cost to you.
