Plate Top
Protected Area
Michaelmas and Upolu Cays
Why dive here
With 154+ marine species recorded in the area - including hammerhead sharks, sea turtles, tiger sharks and napoleon wrasse - Plate Top offers some of Great Barrier Reef's richest reef diving. Water ranges 24-30°C, warmest January, February, March.
Plate Top isn't the biggest name on the Great Barrier Reef, but we consistently find ourselves drawn back to its subtle charm. It’s not about dramatic drop-offs here. Instead, you get a sprawling, relatively shallow plateau, packed with the kind of details that reward slow diving. We love drifting over the staghorn coral patches, keeping an eye out for those flashy harlequin tuskfish – their colours really pop against the blues and greens. What makes Plate Top special for us is the sheer number of those smaller, often overlooked fish. We've spent entire dives just tracking sunburst and citron butterflyfish flitting among the coral, or trying to spot the incredibly camouflaged threespot flounder on the sand. You’ll see plenty of rivulated and bicolor parrotfish munching away, too. It’s a site that really suits divers who prefer to take their time, exploring every crevice rather than racing past big pelagics. Visibility is generally solid, and currents tend to be mild, making it a relaxed dive where you can truly focus on the reef's intricate tapestry. Keep an eye on the shallower sections just before surfacing, we’ve often spotted Lesser Frigatebirds circling overhead.
Typical Plate Top Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Strong currents typical this month (avg 30 cm/s). Good buoyancy control essential.
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Conditions
Ocean conditions, forecast and tides for Plate Top
Plate Top Ocean Conditions
Monthly averages for Plate Top, 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)
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